init

.gitattributes

@@ -0,0 +1,13 @@
+*.yml linguist-detectable=true
+*.yml linguist-language=YAML
+
+*.yaml linguist-detectable=true
+*.yaml linguist-language=YAML
+
+*.just linguist-detectable=true
+*.just linguist-documentation=false
+*.just linguist-language=Just
+
+*.json linguist-detectable=true
+*.json linguist-documentation=false
+*.json linguist-language=JSON

.github/renovate.json5

@@ -0,0 +1,6 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": [
+    "github>ublue-os/renovate-config:org-inherited-config"
+  ]
+}

.github/workflows/build.yml

@@ -0,0 +1,53 @@
+name: Build
+on:
+  pull_request:
+    branches:
+      - main
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+env:
+  IMAGE_REGISTRY: ghcr.io/${{ github.repository_owner }}
+  IMAGE_NAME: aurora-oci
+
+jobs:
+  build_push:
+    name: Build and push image
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+      id-token: write
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
+
+      - name: Build Image
+        id: build
+        run: |
+          buildah build -t ${{ env.IMAGE_NAME }}:latest -f ./Containerfile .
+
+      - name: Login to GitHub Container Registry
+        if: github.event_name != 'pull_request'
+        run: |
+          echo "${{ secrets.GITHUB_TOKEN }}" | podman login -u "${{ github.actor }}" --password-stdin ghcr.io
+
+      - name: Push Image
+        if: github.event_name != 'pull_request'
+        run: |
+          podman push ${{ env.IMAGE_NAME }}:latest ${{ env.IMAGE_REGISTRY }}/${{ env.IMAGE_NAME }}:latest
+
+      # - name: Install Cosign
+      #   uses: sigstore/cosign-installer@7e8b541eb2e61bf99390e1afd4be13a184e9ebc5 # v3.10.1
+      #   if: github.event_name != 'pull_request'
+
+      # - name: Sign container image
+      #   if: github.event_name != 'pull_request'
+      #   run: |
+      #     cosign sign -y --key env://COSIGN_PRIVATE_KEY ${{ env.IMAGE_REGISTRY }}/${{ env.IMAGE_NAME }}:latest
+      #   env:
+      #     COSIGN_EXPERIMENTAL: false
+      #     COSIGN_PRIVATE_KEY: ${{ secrets.SIGNING_SECRET }}

.github/workflows/release.yml

@@ -0,0 +1,69 @@
+name: Monthly Release
+
+on:
+  schedule:
+    # Run on the 1st of every month at 00:00 UTC
+    - cron: '0 0 1 * *'
+  workflow_dispatch:
+
+permissions:
+  contents: write
+
+jobs:
+  release:
+    name: Create monthly snapshot release
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        with:
+          fetch-depth: 0
+
+      - name: Generate release tag
+        id: tag
+        run: |
+          TAG="v$(date +'%Y.%m')"
+          echo "tag=${TAG}" >> "$GITHUB_OUTPUT"
+          echo "Release tag: ${TAG}"
+
+      - name: Generate release notes
+        id: notes
+        run: |
+          TAG="${{ steps.tag.outputs.tag }}"
+          PREVIOUS_TAG=$(git tag --sort=-version:refname | head -n1)
+
+          if [ -z "$PREVIOUS_TAG" ]; then
+            echo "First release - no previous tag found"
+            cat >> "$GITHUB_OUTPUT" <<EOF
+          notes<<NOTES_EOF
+          Monthly snapshot release ${TAG}
+
+          This is an automated monthly snapshot of bluefin-common configuration files.
+          NOTES_EOF
+          EOF
+          else
+            echo "Generating notes since ${PREVIOUS_TAG}"
+            cat >> "$GITHUB_OUTPUT" <<EOF
+          notes<<NOTES_EOF
+          Monthly snapshot release ${TAG}
+
+          ## Changes since ${PREVIOUS_TAG}
+
+          $(git log "${PREVIOUS_TAG}..HEAD" --pretty=format:'- %s (%h)' --no-merges)
+
+          ---
+          *This is an automated monthly snapshot of bluefin-common configuration files.*
+          NOTES_EOF
+          EOF
+          fi
+
+      - name: Create Release
+        uses: ncipollo/release-action@2c591bcc8ecdcd2db72b97d6147f871fcd833ba5 # v1.14.0
+        with:
+          tag: ${{ steps.tag.outputs.tag }}
+          name: ${{ steps.tag.outputs.tag }}
+          body: ${{ steps.notes.outputs.notes }}
+          draft: false
+          prerelease: false
+          makeLatest: true

.github/workflows/validate-brewfiles.yaml

@@ -0,0 +1,38 @@
+name: Validate Brewfiles
+permissions:
+  contents: read
+
+on:
+  pull_request:
+    paths:
+      - "system_files/usr/share/ublue-os/homebrew/**"
+jobs:
+  validate:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6
+
+      - name: Set up Homebrew
+        uses: Homebrew/actions/setup-homebrew@main
+
+      - name: Validate Brewfiles
+        shell: bash
+        run: |
+          echo "Validating Brewfiles in homebrew directory..."
+
+          find "system_files/usr/share/ublue-os/homebrew" -iname '*\.Brewfile*' -print0 | \
+            while IFS= read -r -d '' brewfile ; do \
+              echo "::group:: ===$(basename $brewfile)==="
+              grep -E -e "^tap" $brewfile > taps.Brewfile
+              set -xeuo pipefail
+              brew bundle --file=./taps.Brewfile
+              if brew bundle exec whoami --file="$brewfile" | grep -F -e "${USER}" ; then
+                echo "✓ $brewfile is valid"
+              else
+                echo "✗ $brewfile validation failed"
+                exit 1
+              fi
+              set +xeuo pipefail
+              echo "::endgroup::"
+            done

.gitignore

@@ -0,0 +1,13 @@
+*.iso
+*.iso-CHECKSUM
+flatpaks_with_deps
+flatpak.*
+
+*_build
+*_build.*
+previous.manifest.json
+changelog.md
+output.env
+version.txt
+
+devcontainer

.pre-commit-config.yaml

@@ -0,0 +1,11 @@
+# .pre-commit-config.yaml
+
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.4.0
+    hooks:
+        - id: check-json
+        - id: check-toml
+        - id: check-yaml
+        - id: end-of-file-fixer
+        - id: trailing-whitespace

AGENTS.md

@@ -0,0 +1,165 @@
+# Bluefin-Common Copilot Instructions
+
+This document provides essential information for coding agents working with the bluefin-common repository.
+
+## Repository Overview
+
+**Bluefin-Common** is a shared OCI layer containing common configuration files used across all Bluefin variants (bluefin, bluefin-dx, bluefin-lts).
+
+- **Type**: Minimal OCI container layer (system files only)
+- **Purpose**: Centralize shared configuration to reduce duplication across bluefin and bluefin-lts
+- **Base**: Built from scratch with COPY directive
+- **Languages**: Configuration files (JSON, shell scripts, markdown)
+- **Build System**: GitHub Actions with podman/buildah
+
+## Repository Structure
+
+### Root Directory Files
+- `Containerfile` - Multi-stage build (scratch → ctx stage with system_files)
+- `cosign.pub` - Container signing public key (shared with bluefin/bluefin-lts)
+- `README.md` - Basic repository description
+
+### Key Directories
+- `system_files/` - All configuration files that get copied into bluefin images
+  - `etc/ublue-os/` - System configuration files (bling.json, fastfetch.json, setup.json)
+  - `usr/share/ublue-os/` - User-space configurations
+    - `firefox-config/` - Firefox default settings
+    - `flatpak-overrides/` - Flatpak app overrides
+    - `just/` - Just recipe additions
+    - `motd/` - Message of the day templates and tips
+    - `privileged-setup.hooks.d/` - Privileged setup hooks
+    - `system-setup.hooks.d/` - System setup hooks
+    - `user-setup.hooks.d/` - User setup hooks
+
+### GitHub Actions
+- `.github/workflows/build.yml` - Simple build workflow using podman/buildah
+
+## Build Instructions
+
+### Prerequisites
+This repository requires minimal tooling:
+- **podman** and **buildah** (usually pre-installed on development systems)
+- No Just, no pre-commit, no complex build dependencies
+
+### Build Commands
+
+**Build locally:**
+```bash
+# Build the container
+buildah build -t bluefin-common:latest -f ./Containerfile .
+
+# Inspect the built image
+podman images bluefin-common
+```
+
+**Test the image:**
+```bash
+# Copy files from the container to verify structure
+podman create --name test bluefin-common:latest
+podman cp test:/system_files ./test-output
+podman rm test
+tree ./test-output
+```
+
+### Build Process
+1. GitHub Actions triggers on push to main or PR
+2. `buildah build` creates image from `Containerfile`
+3. Image is pushed to `ghcr.io/projectbluefin/bluefin-common:latest`
+4. Bluefin and bluefin-lts reference this image with `COPY --from=ghcr.io/ublue-os/bluefin-common:latest`
+
+## Usage in Downstream Projects
+
+Bluefin and bluefin-lts use this layer in their Containerfiles:
+
+```dockerfile
+FROM ghcr.io/ublue-os/bluefin-common:latest AS bluefin-common
+
+# Later in the build:
+COPY --from=bluefin-common /system_files /desired/destination
+```
+
+## Making Changes
+
+### Modifying Configuration Files
+
+1. **Edit files in `system_files/`** - Maintain the existing directory structure
+2. **Test locally** with buildah to ensure no syntax errors
+3. **Create PR** - GitHub Actions will build and validate
+
+### Adding New Configuration Files
+
+1. Place files in the appropriate subdirectory under `system_files/`
+2. Follow the existing path conventions:
+   - System configs: `system_files/etc/ublue-os/`
+   - User configs: `system_files/usr/share/ublue-os/`
+3. Ensure file permissions are correct (executables for scripts)
+
+### Common Modification Patterns
+- **Firefox configs**: Edit `system_files/usr/share/ublue-os/firefox-config/`
+- **Setup hooks**: Modify scripts in `system_files/usr/share/ublue-os/*-setup.hooks.d/`
+- **System settings**: Update JSON files in `system_files/etc/ublue-os/`
+- **Just recipes**: Add/modify `.just` files in `system_files/usr/share/ublue-os/just/`
+
+## Validation
+
+### Manual Validation
+```bash
+# Check Containerfile syntax
+buildah build --dry-run -f ./Containerfile .
+
+# Validate JSON files
+find system_files -name "*.json" -exec sh -c 'echo "Checking {}"; cat {} | jq . > /dev/null' \;
+
+# Check shell script syntax
+find system_files -name "*.sh" -exec bash -n {} \;
+```
+
+### GitHub Actions
+The build workflow automatically:
+- Builds the container with buildah
+- Pushes to GHCR on merge to main
+- Validates build succeeds on PRs
+
+## Development Guidelines
+
+### Making Changes
+1. **Keep it simple** - This repo contains only configuration files
+2. **Maintain structure** - Follow existing directory patterns
+3. **Test locally** - Build with buildah before pushing
+4. **No complex dependencies** - This is intentionally minimal
+
+### File Editing Best Practices
+- **JSON files**: Validate syntax with `jq` before committing
+- **Shell scripts**: Check syntax with `bash -n script.sh`
+- **Keep files small** - Each file should have a single, clear purpose
+- **Document changes** - Update comments in configuration files
+
+## Trust These Instructions
+
+**This repository is intentionally simple.** It contains only:
+- Configuration files in `system_files/`
+- A minimal Containerfile
+- A simple GitHub Actions workflow
+
+There are no complex build systems, no package management, no multi-stage builds beyond the scratch→ctx pattern.
+
+## Other Rules
+
+- Use [conventional commits](https://www.conventionalcommits.org/en/v1.0.0/#specification) for all commits and PR titles
+- Keep changes minimal and surgical
+- This layer is used by both bluefin (ublue-os/bluefin) and bluefin-lts (ublue-os/bluefin-lts)
+- Changes here affect all downstream Bluefin variants
+
+## Attribution Requirements
+
+AI agents must disclose what tool and model they are using in the "Assisted-by" commit footer:
+
+```text
+Assisted-by: [Model Name] via [Tool Name]
+```
+
+Example:
+
+```text
+Assisted-by: Claude 3.5 Sonnet via GitHub Copilot
+```

Containerfile

@@ -0,0 +1,7 @@
+FROM scratch AS ctx
+COPY /brew /brew
+COPY /flatpaks /flatpaks
+COPY /just /just
+COPY /logos /logos
+COPY /system_files /system_files
+

Justfile

@@ -0,0 +1,3 @@
+# Build the aurora-oci container locally
+build:
+    buildah build -t aurora-oci:latest -f ./Containerfile .

LICENSE

@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

README.md

@@ -0,0 +1,56 @@
+# bluefin-common
+
+Shared OCI layer containing common configuration files used across all Bluefin variants (bluefin, bluefin-dx, bluefin-lts).
+
+## What's Inside
+
+This layer contains two main configuration directories:
+
+### `/etc/ublue-os/` - System Configuration
+- Bling - CLI theming settings
+- Fastfetch settings - System information display configuration
+- Setup configuration - First-boot and system setup parameters
+
+### `/usr/share/ublue-os/` - User-Space Configuration
+- Firefox defaults - Pre-configured Firefox settings
+- Flatpak overrides - Application-specific Flatpak configurations
+- Just recipes - Additional command recipes for system management
+- MOTD templates - Message of the day and tips
+- Setup hooks - Scripts for privileged, system, and user setup stages
+
+## Usage in Containerfile
+
+Reference this layer as a build stage and copy the directories you need:
+
+### Copy everything:
+```dockerfile
+FROM ghcr.io/ublue-os/bluefin-common:latest AS bluefin-common
+
+# Copy all system files
+COPY --from=bluefin-common /system_files /
+```
+
+### Copy only system configuration:
+
+This is what Aurora should use, gives shares the common set of files and keeps the images opinions seperate.
+
+```dockerfile
+FROM ghcr.io/ublue-os/bluefin-common:latest AS bluefin-common
+
+# Copy only /etc configuration
+COPY --from=bluefin-common /system_files/etc /etc
+```
+
+### Copy only the image opinion:
+```dockerfile
+FROM ghcr.io/ublue-os/bluefin-common:latest AS bluefin-common
+
+# Copy only /usr/share configuration
+COPY --from=bluefin-common /system_files/usr /usr
+```
+
+## Building Locally
+
+```bash
+just build
+```