update deploy action to use ghcr (#702)

.github/workflows/deploy.yml

@@ -8,13 +8,90 @@ on:
       - main
 
 jobs:
+  Docker:
+    if: ${{ github.repository_owner == 'beam-community' }}
+    runs-on: ubuntu-latest
+
+    outputs:
+      image: ${{ steps.outputs.outputs.image }}
+      tag: ${{ steps.outputs.outputs.tag }}
+
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - id: metadata
+        name: Get Metadata
+        uses: docker/metadata-action@v5
+        with:
+          flavor: |
+            latest=auto
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          images: |
+            ghcr.io/${{ github.repository }}
+          tags: |
+            type=sha
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=semver,pattern={{major}}
+            type=ref,event=branch
+            type=ref,event=pr
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login (GHCR)
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - id: build
+        name: Build
+        uses: docker/build-push-action@v6
+        with:
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+          labels: ${{ steps.metadata.outputs.labels }}
+          platforms: linux/amd64
+          push: true
+          tags: ${{ steps.metadata.outputs.tags }}
+
+      - id: outputs
+        name: Get Outputs
+        uses: actions/github-script@v7
+        env:
+          BUILD_OUTPUT: ${{ steps.metadata.outputs.json }}
+        with:
+          script: |
+            const metadata = JSON.parse(process.env.BUILD_OUTPUT)
+            const shaUrl = metadata.tags.find((t) => t.includes(':sha-'))
+
+            if (shaUrl == null) {
+              core.error('Unable to find sha tag of image')
+            } else {
+              const [image, tag] = shaUrl.split(':')
+              core.setOutput('image', image)
+              core.setOutput('tag', tag)
+            }
+
   Deploy:
     if: ${{ github.repository_owner == 'beam-community' }}
     runs-on: ubuntu-latest
+    needs: [Docker]
 
     steps:
-      - uses: actions/checkout@v3
-      - uses: superfly/flyctl-actions/setup-flyctl@master
-      - run: flyctl deploy --remote-only
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Install (flyctl)
+        uses: superfly/flyctl-actions/setup-flyctl@master
+
+      - run: flyctl deploy --yes --image "${{ needs.Docker.outputs.image }}:${{ needs.Docker.outputs.tag }}"
         env:
           FLY_API_TOKEN: ${{ secrets.FLY_API_TOKEN }}

Dockerfile

@@ -8,9 +8,9 @@
 # This file is based on these images:
 #
 #   - https://hub.docker.com/r/hexpm/elixir/tags - for the build image
-#   - https://hub.docker.com/_/debian?tab=tags&page=1&name=bullseye-20210902-slim - for the release image
+#   - https://hub.docker.com/_/debian?tab=tags&page=1&name=bullseye-20240812-slim - for the release image
 #   - https://pkgs.org/ - resource for finding needed packages
-#   - Ex: hexpm/elixir:1.14.1-erlang-25.0-debian-bullseye-20210902-slim
+#   - Ex: hexpm/elixir:1.14.1-erlang-25.0-debian-bullseye-20240812-slim
 #
 ARG ELIXIR_VERSION=1.17.2
 ARG OTP_VERSION=27.0.1