build: dockerize

Author: ProgramRipper

.github/workflows/milky-build.yaml

@@ -34,7 +34,7 @@ jobs:
           - os: ubuntu-latest
             rid: linux-x64
             binary-extension: ''
-    
+
     env:
       RUNTIME_IDENTIFIER: ${{ matrix.rid }}
 
@@ -60,3 +60,47 @@ jobs:
         with:
           name: Lagrange.Milky-${{ matrix.rid }}
           path: Lagrange.Milky/bin/Release/net9.0/${{ matrix.rid }}/publish/Lagrange.Milky${{ matrix.binary-extension }}
+
+  docker:
+    needs: build
+    runs-on: ubuntu-latest
+    if: github.event_name != 'pull_request'
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Download build artifact
+        uses: actions/download-artifact@v4
+        with:
+          name: Lagrange.Milky-linux-x64
+          path: Lagrange.Milky/bin/Release/net9.0/linux-x64/publish/Lagrange.Milky
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to Github Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: |
+            ghcr.io/${{ github.repository_owner }}/lagrange.milky
+          tags: |
+            type=edge
+            type=sha,event=branch
+            type=ref,event=tag
+
+      - name: Build and push
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: "Lagrange.Milky/Resources/Dockerfile"
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

Lagrange.Milky/Resources/Dockerfile

@@ -0,0 +1,11 @@
+FROM scratch
+
+WORKDIR /app/data
+
+COPY --link --from=tianon/gosu /gosu /usr/local/bin/
+COPY --link Lagrange.Milky/Resources/docker-entrypoint.sh /app/bin/docker-entrypoint.sh
+RUN chmod +x /app/bin/docker-entrypoint.sh
+
+COPY --link Lagrange.Milky/bin/Release/net9.0/linux-x64/publish/Lagrange.Milky /app/bin
+
+ENTRYPOINT ["/app/bin/docker-entrypoint.sh"]

Lagrange.Milky/Resources/docker-entrypoint.sh

@@ -0,0 +1,13 @@
+#!/bin/sh
+
+USER_ID=${UID:-0}
+
+if [ "$USER_ID" -ne 0 ]; then
+    chown -R $USER_ID /app/data
+    useradd --shell /bin/sh -u $USER_ID -o -c "" -m user
+    usermod -a -G root user
+    export HOME=/home/user
+    exec /usr/sbin/gosu user /app/bin/Lagrange.Milky "$@"
+else
+    exec /app/bin/Lagrange.Milky "$@"
+fi