Merge pull request #106 from ublue-os/docker

feat: create a docker app

.github/workflows/build-docker-app.yml

@@ -0,0 +1,108 @@
+name: Build and Push Docker App Toolbox
+on:
+  schedule:
+    - cron: '20 22 * * *'  # 10:20pm everyday
+  pull_request:
+  merge_group:
+  workflow_dispatch:
+env:
+    IMAGE_NAME: docker-distrobox
+    IMAGE_TAGS: latest
+    IMAGE_REGISTRY: ghcr.io/${{ github.repository_owner }}
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  push-ghcr:
+    name: Build and push image
+    runs-on: ubuntu-22.04
+    permissions:
+      contents: read
+      packages: write
+      id-token: write
+    strategy:
+      fail-fast: false
+    steps:
+      # Checkout push-to-registry action GitHub repository
+      - name: Checkout Push to Registry action
+        uses: actions/checkout@v4
+
+      - name: Verify Ublue-OS Ubuntu toolbox
+        uses: EyeCantCU/cosign-action/[email protected]
+        with:
+          containers: ubuntu-toolbox:latest
+          pubkey: https://raw.githubusercontent.com/ublue-os/toolboxes/main/cosign.pub
+          registry: ghcr.io/ublue-os
+
+      # Build metadata
+      - name: Image Metadata
+        uses: docker/metadata-action@v5
+        id: meta
+        with:
+          images: |
+            ${{ env.IMAGE_NAME }}
+          labels: |
+            io.artifacthub.package.readme-url=https://raw.githubusercontent.com/ublue-os/boxkit/main/README.md
+
+      # Build image using Buildah action
+      - name: Build Image
+        id: build_image
+        uses: redhat-actions/buildah-build@v2
+        with:
+          containerfiles: |
+            ./apps/docker/Containerfile.docker
+          image: ${{ env.IMAGE_NAME }}
+          tags: ${{ env.IMAGE_TAGS }}
+          labels: ${{ steps.meta.outputs.labels }}
+          oci: false
+
+      # Workaround bug where capital letters in your GitHub username make it impossible to push to GHCR.
+      # https://github.com/macbre/push-to-ghcr/issues/12
+      - name: Lowercase Registry
+        id: registry_case
+        uses: ASzc/change-string-case-action@v6
+        with:
+          string: ${{ env.IMAGE_REGISTRY }}
+
+      # Push the image to GHCR (Image Registry)
+      - name: Push To GHCR
+        uses: redhat-actions/push-to-registry@v2
+        if: github.event_name != 'pull_request'
+        id: push
+        env:
+          REGISTRY_USER: ${{ github.actor }}
+          REGISTRY_PASSWORD: ${{ github.token }}
+        with:
+          image: ${{ steps.build_image.outputs.image }}
+          tags: ${{ steps.build_image.outputs.tags }}
+          registry: ${{ steps.registry_case.outputs.lowercase }}
+          username: ${{ env.REGISTRY_USER }}
+          password: ${{ env.REGISTRY_PASSWORD }}
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v3
+        if: github.event_name != 'pull_request'
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      # Sign container
+      - uses: sigstore/[email protected]
+        if: github.event_name != 'pull_request'
+
+      - name: Sign container image
+        if: github.event_name != 'pull_request'
+        run: |
+          echo "${{ env.COSIGN_PRIVATE_KEY }}" > cosign.key
+          wc -c cosign.key
+          cosign sign -y --key cosign.key ${{ steps.registry_case.outputs.lowercase }}/${{ env.IMAGE_NAME }}@${TAGS}
+        env:
+          TAGS: ${{ steps.push.outputs.digest }}
+          COSIGN_EXPERIMENTAL: false
+          COSIGN_PRIVATE_KEY: ${{ secrets.SIGNING_SECRET }}
+
+      - name: Echo outputs
+        run: |
+          echo "${{ toJSON(steps.push.outputs) }}"

apps/docker/Containerfile.docker

@@ -0,0 +1,23 @@
+FROM ghcr.io/ublue-os/ubuntu-toolbox
+
+RUN apt-get update && \
+    apt-get install -y \
+        ca-certificates \
+        curl \
+        systemd && \
+    mkdir -p /etc/apt/keyrings/ && \
+    curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o \
+        /etc/apt/keyrings/docker.asc && \
+    echo "deb [arch=$(dpkg --print-architecture) \
+         signed-by=/etc/apt/keyrings/docker.asc] \
+         https://download.docker.com/linux/ubuntu \
+         $(. /etc/os-release && echo "$VERSION_CODENAME") stable" \
+         > /etc/apt/sources.list.d/docker.list && \
+    apt-get update && \
+    apt-get install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin && \
+    apt-get clean && \
+    mkdir -p /var/lib/docker && \
+    groupmod -g 252 docker && \
+    systemctl enable docker.socket
+
+CMD ["/sbin/init"]