Build and push images w/ GH Actions workflow

.github/workflows/build-image.yaml

@@ -0,0 +1,39 @@
+name: Build Docker image
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: ["*"]
+
+env:
+  REGISTRY: ghcr.io
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Log in to the Container registry
+        uses: docker/login-action@f054a8b539a109f9f41c372932f1ae047eff08c9
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Construct tags / labels for an image
+        id: meta
+        uses: docker/metadata-action@98669ae865ea3cffbcbaa878cf57c20bbf1c6c38
+        with:
+          images: |
+            ${{ env.REGISTRY }}/${{ github.repository }}
+          tags: |
+            type=sha
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@ad44023a93711e3deb337508980b4b5e9bcdc5dc
+        with:
+          push: ${{ github.event_name == 'push' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

.gitignore

@@ -8,8 +8,6 @@ erl_crash.dump
 *.sublime-workspace
 .edts
 .DS_Store
-Dockerfile
-docker-compose.yml
 /.idea/
 *.beam
 /test/log/

Dockerfile

@@ -0,0 +1,17 @@
+FROM ghcr.io/rbkmoney/build-erlang:785d48cbfa7e7f355300c08ba9edc6f0e78810cb AS builder
+RUN mkdir /build
+COPY . /build/
+WORKDIR /build
+RUN rebar3 compile
+RUN rebar3 as prod release
+
+# Keep in sync with Erlang/OTP version in build image
+FROM erlang:24.1.3.0-slim
+ENV SERVICE=fistful-server
+ENV CHARSET=UTF-8
+ENV LANG=C.UTF-8
+COPY --from=builder /build/_build/prod/rel/${SERVICE} /opt/${SERVICE}
+WORKDIR /opt/${SERVICE}
+ENTRYPOINT []
+CMD /opt/${SERVICE}/bin/${SERVICE} foreground
+EXPOSE 8022