On Releases, Build & Publish a docker image for the server

.github/workflows/docker_server.yml

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+name: Publish Docker Containers
+
+on:
+  push:
+    tags:
+      - "v[0-9]+.[0-9]+"
+
+jobs:
+  # define job to build and publish docker image
+  build-and-push-docker-image:
+    name: Build Latest Docker image and push to repositories
+    # run only when code is compiling and tests are passing
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - dockerfile: ./Dockerfile
+            image: ghcr.io/${{ github.repository_owner }}/hacker-leauge-server
+    permissions:
+      contents: read
+      packages: write
+
+    # steps to perform in job
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      # setup Docker buld action
+      - name: Set up Docker Buildx
+        id: buildx
+        uses: docker/setup-buildx-action@v2
+
+      # Setup "metadata"
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          # list of Docker images to use as base name for tags
+          images: ${{ matrix.image }}
+          # generate Docker tags based on the following events/attributes
+          tags: |
+            type=raw,value=latest,enable={{is_default_branch}}
+            type=pep440,pattern={{version}}
+          #  type=semver,pattern=v{{major}}.{{minor}}
+          #  type=semver,pattern={{version}}
+          #  type=ref,event=pr
+          #  type=semver,pattern={{major}}
+          #  type=sha
+          #  type=schedule
+
+      - name: Login to Github Packages
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: DEBUG
+        run: echo ${{ github.ref }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v3
+        with:
+          context: .
+          file: ${{ matrix.dockerfile }}
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+
+      - name: Image digest
+        run: echo ${{ steps.docker_build.outputs.digest }}

Dockerfile

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+# Stage 1: Build stage
+FROM debian:12.7 as build
+
+# Set the working directory to /tmp
+WORKDIR /tmp
+
+RUN apt-get update && \
+    apt-get install -y curl
+
+# Download the server binary
+RUN curl -L -o server "https://github.com/moritztng/hacker-league/releases/latest/download/server_x86_64_debian"
+
+# Stage 2: Final stage
+FROM debian:12.7
+
+# Set the working directory to /app
+WORKDIR /app
+
+EXPOSE 10000
+
+RUN apt-get update && \
+    apt-get install -y libglfw3 libcurl4-openssl-dev && \
+    rm -rf /var/lib/apt/lists/*
+
+# Copy the server binary from the build stage
+COPY --from=build /tmp/server /app/server
+RUN chmod +x /app/server
+
+ENTRYPOINT ["/app/server", "10000"]