feat: Added workflow to build and push images to ghcr

.github/workflows/build.yml

@@ -0,0 +1,72 @@
+name: Publish and Sign Container Image
+
+env:
+  REGISTRY: ghcr.io
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - .github/workflows/build.yml
+      - "**/Dockerfile"
+  schedule:
+    - cron: "17 07 * * 0"
+
+jobs:
+  build-push-image:
+    runs-on: ubuntu-24.04
+
+    permissions:
+      contents: read
+      packages: write
+      id-token: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - image: spotify
+            file: distroboxes/spotify/Containerfile
+          - image: steam
+            file: distroboxes/steam/Containerfile
+
+    steps:
+      - name: Setup Docker buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Install cosign
+        uses: sigstore/cosign-installer@v3
+        with:
+          cosign-release: "v2.4.1"
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: |
+            ${{ env.REGISTRY }}/${{ github.repository_owner }}/${{ matrix.image }}-container
+          tags: |
+            latest
+            type=sha,format=long
+
+      - name: Log into ${{ env.REGISTRY }}
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.repository_owner }}
+          password: ${{ github.token }}
+
+      - name: Build and push container image
+        id: push-step
+        uses: docker/build-push-action@v6
+        with:
+          push: true
+          file: ${{ matrix.file }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+
+      - name: Sign the container image
+        run: cosign sign --yes ${{ env.REGISTRY }}/${{ github.repository_owner }}/${{ matrix.image }}-container@${{ steps.push-step.outputs.digest }} ${{ env.REGISTRY }}/${{ github.repository_owner }}/${{ matrix.image }}-container:latest

distroboxes/spotify/Containerfile

@@ -6,9 +6,12 @@ LABEL com.github.containers.toolbox="true" \
     summary="Container containing official spotify player." \
     maintainer="[email protected]"
 
-COPY --chmod=644 root/etc/apt/sources.list.d/spotify.list /etc/apt/sources.list.d/spotify.list
-COPY --chmod=644 root/etc/apt/trusted.gpg.d/spotify.gpg /etc/apt/trusted.gpg.d/spotify.gpg
-
+RUN curl -sS https://download.spotify.com/debian/pubkey_6224F9941A8AA6D1.gpg | \
+    gpg --dearmor --yes -o /etc/apt/trusted.gpg.d/spotify.gpg && \
+    echo "deb http://repository.spotify.com stable non-free" | \
+    tee /etc/apt/sources.list.d/spotify.list && \
+    ln -sf /usr/share/spotify/spotify.desktop /usr/share/applications/spotify.desktop && \
+    ln -sf /usr/share/spotify/icons/spotify_icon.ico /usr/share/icons/spotify.ico
 RUN DEBIAN_FRONTEND=noninteractive apt-get update && \
     DEBIAN_FRONTEND=noninteractive apt-get -y upgrade && \
     DEBIAN_FRONTEND=noninteractive apt-get -y install \