Add Docker support

.dockerignore

@@ -0,0 +1,8 @@
+*
+!config/
+!handler/
+!storage/
+!go.mod
+!go.sum
+!main.go
+!post.gohtml

.env.example

@@ -1,6 +1,6 @@
 ADMIN_ID=1337
 BOT_TOKEN=123456789:abcdefghijklmnopqrstuvxwyz
-MYSQL_HOST=127.0.0.1
+MYSQL_HOST=127.0.0.1 Use 'db' for Docker
 MYSQL_PORT=3306
 MYSQL_USER=myuser
 MYSQL_PASSWORD=mypassword

.github/workflows/build.yml

@@ -13,8 +13,8 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        GOOS: [ windows, linux, darwin ]
-        GOARCH: [ amd64, 386, arm, arm64 ]
+        GOOS: [windows, linux, darwin]
+        GOARCH: [amd64, 386, arm, arm64]
         exclude:
           - GOOS: windows
             GOARCH: arm
@@ -68,3 +68,35 @@ jobs:
           path: dist/*
           retention-days: 90
 
+  docker:
+    name: docker
+    runs-on: ubuntu-latest
+    permissions:
+      packages: write
+      contents: read
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Build image
+        run: docker build . --file Dockerfile --tag $NAME --label "runnumber=${GITHUB_RUN_ID}"
+
+      - name: Log in to registry
+        run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u $ --password-stdin
+
+      - name: Push image
+        run: |
+          IMAGE_ID=ghcr.io/${{ github.repository_owner }}/$NAME
+
+          # This changes all uppercase characters to lowercase.
+          IMAGE_ID=$(echo $IMAGE_ID | tr '[A-Z]' '[a-z]')
+          # This strips the git ref prefix from the version.
+          VERSION=$(echo "${{ github.ref }}" | sed -e 's,.*/\(.*\),\1,')
+          # This strips the "v" prefix from the tag name.
+          [[ "${{ github.ref }}" == "refs/tags/"* ]] && VERSION=$(echo $VERSION | sed -e 's/^v//')
+          # This uses the Docker `latest` tag convention.
+          [ "$VERSION" == "master" ] && VERSION=latest
+          echo IMAGE_ID=$IMAGE_ID
+          echo VERSION=$VERSION
+          docker tag $NAME $IMAGE_ID:$VERSION
+          docker push $IMAGE_ID:$VERSION

Dockerfile

@@ -0,0 +1,12 @@
+FROM golang:1.21 AS build-stage
+WORKDIR /app
+COPY go.mod go.sum ./
+RUN go mod download
+COPY . ./
+RUN CGO_ENABLED=0 GOOS=linux go build -o /rssbot
+
+FROM gcr.io/distroless/static-debian12 AS release-stage
+WORKDIR /app
+COPY --from=build-stage /rssbot /app/rssbot
+USER nonroot:nonroot
+ENTRYPOINT ["/app/rssbot"]

docker-compose.yml

@@ -0,0 +1,34 @@
+version: '3.8'
+
+name: rssbot
+services:
+  bot:
+    build: .
+    pull_policy: always
+    # image: ghcr.io/brawl345/rssbot:latest
+    restart: always
+    env_file: .env
+
+  db:
+    image: mariadb:latest
+    restart: always
+    environment:
+      MYSQL_USER: ${MYSQL_USER}
+      MYSQL_PASSWORD: ${MYSQL_PASSWORD}
+      MYSQL_DATABASE: ${MYSQL_DB}
+      MYSQL_RANDOM_ROOT_PASSWORD: true
+    ports:
+      - '33060:3306'
+    volumes:
+      - 'rssbot-db:/var/lib/mysql'
+    healthcheck:
+      test: ['CMD', 'healthcheck.sh', '--connect', '--innodb_initialized']
+      start_period: 1m
+      start_interval: 10s
+      interval: 1m
+      timeout: 5s
+      retries: 3
+
+volumes:
+  rssbot-db:
+    name: rssbot-db

go.sum

@@ -483,7 +483,6 @@ golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210809222454-d867a43fc93e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210927094055-39ccf1dd6fa6/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220114195835-da31bd327af9 h1:XfKQ4OlFl8okEOr5UvAqFRVj8pY/4yfcXrddB8qAbU0=
 golang.org/x/sys v0.0.0-20220114195835-da31bd327af9/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=