Multi-platform build (#234)

* add multi-platform build

.github/workflows/publish-latest.yaml

@@ -12,19 +12,24 @@ jobs:
         uses: actions/checkout@v2
         with:
           fetch-depth: 0
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+      - name: Login to Docker Hub
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKER_USER }}
+          password: ${{ secrets.DOCKER_PASS }}
       - name: Push openvpn image to Docker Hub
-        uses: docker/build-push-action@v1
+        uses: docker/build-push-action@v4
         with:
-          username: ${{ secrets.DOCKER_USER }}
-          password: ${{ secrets.DOCKER_PASS }}
-          repository: flant/ovpn-admin
-          tags: openvpn-latest
-          dockerfile:  Dockerfile.openvpn
+          tags: flant/ovpn-admin:openvpn-latest
+          platforms: linux/amd64,linux/arm64,linux/arm,linux/386
+          file:  Dockerfile.openvpn
+          push: true
       - name: Push ovpn-admin image to Docker Hub
-        uses: docker/build-push-action@v1
+        uses: docker/build-push-action@v4
         with:
-          username: ${{ secrets.DOCKER_USER }}
-          password: ${{ secrets.DOCKER_PASS }}
-          repository: flant/ovpn-admin
-          tags: latest
-          dockerfile: Dockerfile
+          tags: flant/ovpn-admin:latest
+          platforms: linux/amd64,linux/arm64,linux/arm,linux/386
+          file: Dockerfile
+          push: true

.github/workflows/publish-tag.yaml

@@ -16,19 +16,24 @@ jobs:
       - name: Get the version
         id: get_version
         run: echo ::set-output name=VERSION::${GITHUB_REF/refs\/tags\//}
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+      - name: Login to Docker Hub
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKER_USER }}
+          password: ${{ secrets.DOCKER_PASS }}
       - name: Push openvpn image to Docker Hub
-        uses: docker/build-push-action@v1
+        uses: docker/build-push-action@v4
         with:
-          username: ${{ secrets.DOCKER_USER }}
-          password: ${{ secrets.DOCKER_PASS }}
-          repository: flant/ovpn-admin
-          tags: openvpn-${{ steps.get_version.outputs.VERSION }}
-          dockerfile:  Dockerfile.openvpn
+          tags: flant/ovpn-admin:openvpn-${{ steps.get_version.outputs.VERSION }}
+          platforms: linux/amd64,linux/arm64,linux/arm,linux/386
+          file: Dockerfile.openvpn
+          push: true
       - name: Push ovpn-admin image to Docker Hub
-        uses: docker/build-push-action@v1
+        uses: docker/build-push-action@v4
         with:
-          username: ${{ secrets.DOCKER_USER }}
-          password: ${{ secrets.DOCKER_PASS }}
-          repository: flant/ovpn-admin
-          tags: ${{ steps.get_version.outputs.VERSION }}
-          dockerfile: Dockerfile
+          tags: flant/ovpn-admin:${{ steps.get_version.outputs.VERSION }}
+          platforms: linux/amd64,linux/arm64,linux/arm,linux/386
+          file: Dockerfile
+          push: true

Dockerfile

@@ -1,17 +1,20 @@
 FROM node:16-alpine3.15 AS frontend-builder
 COPY frontend/ /app
-RUN cd /app && npm install && npm run build
+RUN apk add --update python3 make g++ && cd /app && npm install && npm run build
 
 FROM golang:1.17.3-buster AS backend-builder
 RUN go install github.com/gobuffalo/packr/v2/packr2@latest
 COPY --from=frontend-builder /app/static /app/frontend/static
 COPY . /app
-RUN cd /app && packr2 && env CGO_ENABLED=1 GOOS=linux GOARCH=amd64 go build -a -tags netgo -ldflags '-linkmode external -extldflags -static -s -w' -o ovpn-admin && packr2 clean
+ARG TARGETARCH
+RUN cd /app && packr2 && env CGO_ENABLED=1 GOOS=linux GOARCH=${TARGETARCH} go build -a -tags netgo -ldflags '-linkmode external -extldflags -static -s -w' -o ovpn-admin && packr2 clean
 
 FROM alpine:3.16
 WORKDIR /app
 COPY --from=backend-builder /app/ovpn-admin /app
+ARG TARGETARCH
 RUN apk add --update bash easy-rsa openssl openvpn coreutils  && \
     ln -s /usr/share/easy-rsa/easyrsa /usr/local/bin && \
-    wget https://github.com/pashcovich/openvpn-user/releases/download/v1.0.4/openvpn-user-linux-amd64.tar.gz -O - | tar xz -C /usr/local/bin && \
+    wget https://github.com/pashcovich/openvpn-user/releases/download/v1.0.4/openvpn-user-linux-${TARGETARCH}.tar.gz -O - | tar xz -C /usr/local/bin && \
     rm -rf /tmp/* /var/tmp/* /var/cache/apk/* /var/cache/distfiles/*
+RUN if [ -f "/usr/local/bin/openvpn-user-${TARGETARCH}" ]; then ln -s /usr/local/bin/openvpn-user-${TARGETARCH} /usr/local/bin/openvpn-user; fi

Dockerfile.openvpn

@@ -1,7 +1,9 @@
 FROM alpine:3.16
+ARG TARGETARCH
 RUN apk add --update bash openvpn easy-rsa iptables  && \
     ln -s /usr/share/easy-rsa/easyrsa /usr/local/bin && \
-    wget https://github.com/pashcovich/openvpn-user/releases/download/v1.0.4/openvpn-user-linux-amd64.tar.gz -O - | tar xz -C /usr/local/bin && \
+    wget https://github.com/pashcovich/openvpn-user/releases/download/v1.0.4/openvpn-user-linux-${TARGETARCH}.tar.gz -O - | tar xz -C /usr/local/bin && \
     rm -rf /tmp/* /var/tmp/* /var/cache/apk/* /var/cache/distfiles/*
+RUN if [ -f "/usr/local/bin/openvpn-user-${TARGETARCH}" ]; then ln -s /usr/local/bin/openvpn-user-${TARGETARCH} /usr/local/bin/openvpn-user; fi
 COPY setup/ /etc/openvpn/setup
 RUN chmod +x /etc/openvpn/setup/configure.sh

main.go

@@ -94,9 +94,6 @@ var logFormats = map[string]log.Formatter{
 	"json": &log.JSONFormatter{},
 }
 
-var (
-)
-
 var (
 	ovpnServerCertExpire = prometheus.NewGauge(prometheus.GaugeOpts{
 		Name: "ovpn_server_cert_expire",