Added first version of Dockerfile and release.yml. Addresses #

.github/workflows/release.yml

@@ -0,0 +1,66 @@
+name: Publish DRES Distribution and Docker Image
+
+on:
+  push:
+    tags:
+      - 'v*' # Push events to matching v*, i.e. v1.0, v20.15.10
+
+env:
+  IMAGE_NAME: dres
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          submodules: true
+      - name: set up JDK 11
+        uses: actions/setup-java@v1
+        with:
+          java-version: 11.0.6
+      - name: Cache Gradle packages
+        uses: actions/cache@v1
+        with:
+          path: ~/.gradle/caches
+          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle') }}
+          restore-keys: ${{ runner.os }}-gradle
+      - name: Build distribution
+        run: ./gradlew distTar
+      - name: Get the version
+        id: get_version
+        run: echo "VERSION=${GITHUB_REF/refs\/tags\/v/}" >> $GITHUB_ENV
+      - name: Create Release
+        id: create_release
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ env.VERSION }}
+          release_name: Release ${{ env.VERSION }}
+          draft: false
+          prerelease: false
+      - name: Upload Release Asset
+        id: upload-release-asset
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }} # This pulls from the CREATE RELEASE step above, referencing it's ID to get its outputs object, which include a `upload_url`. See this blog post for more info: https://jasonet.co/posts/new-features-of-github-actions/#passing-data-to-future-steps
+          asset_path: ./backend/build/distributions/dres-dist.tar
+          asset_name: dres-dist-${{ env.VERSION }}.tar
+          asset_content_type: application/tar
+      - name: Build Docker Image
+        run: docker build . --file Dockerfile --tag ${{ env.IMAGE_NAME }}
+      - name: Log into Docker Registry
+        run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login docker.pkg.github.com -u ${{ secrets.DOCKER_USERNAME }} --password-stdin
+      - name: Push Docker image
+        run: |
+          IMAGE_ID=docker.pkg.github.com/dres-dev/DRES/${{ env.IMAGE_NAME }}
+
+          # Use Docker `latest` tag convention
+          [ "$VERSION" == "master" ] && VERSION=latest
+          echo IMAGE_ID=$IMAGE_ID
+          echo VERSION=$VERSION
+          docker tag $IMAGE_NAME $IMAGE_ID:$VERSION
+          docker push $IMAGE_ID:$VERSION

Dockerfile

@@ -2,19 +2,17 @@ FROM zenika/kotlin:1.4.20-jdk11 AS build
 
 COPY . /dres-src
 RUN cd /dres-src && \
-  ./gradlew distTar
-
-
-RUN mkdir dres-dist && \
+  ./gradlew distTar && \
+  mkdir dres-dist && \
   cd dres-dist && \
   tar xf ../backend/build/distributions/dres-dist.tar
 
 FROM zenika/kotlin:1.4.20-jdk11-slim
 
 RUN mkdir /dres-data
-COPY backend/config.json /dres-data
+COPY config.json /dres-data
 COPY --from=build /dres-src/dres-dist /
 
 EXPOSE 8080
 EXPOSE 8443
-ENTRYPOINT /dres-dist/bin/dres /dres-data/config.json
+ENTRYPOINT /dres-dist/bin/backend /dres-data/config.json