Merge pull request #105 from danieldabate/master

Multi-platform docker image build

.github/workflows/publish-docker.yml

@@ -19,6 +19,12 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v2
 
+      - name: Set up QEMU
+        uses: docker/[email protected]
+
+      - name: Set up Docker Buildx
+        uses: docker/[email protected]
+
       - name: Docker Login
         uses: docker/[email protected]
         with:
@@ -36,6 +42,7 @@ jobs:
         uses: docker/[email protected]
         with:
           context: .
+          platforms: linux/386,linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64/v8
           push: true
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}

Dockerfile

@@ -1,22 +1,23 @@
 # syntax=docker/dockerfile:1
 
-FROM golang:1.18rc1-alpine3.15 AS builder
+FROM --platform=${BUILDPLATFORM} golang:1.18rc1-alpine3.15 AS builder
 
 RUN apk add git
 
 WORKDIR /go/src/app
 COPY . .
 
+ARG TARGETOS TARGETARCH TARGETVARIANT
+
 ENV CGO_ENABLED=0
 RUN go get \
     && go mod download \
-    && go build -a -o rtsp-to-web
+    && GOOS=${TARGETOS} GOARCH=${TARGETARCH} GOARM=${TARGETVARIANT#"v"} go build -a -o rtsp-to-web
 
 FROM alpine:3.15
 
 WORKDIR /app
 
-
 COPY --from=builder /go/src/app/rtsp-to-web /app/
 COPY --from=builder /go/src/app/web /app/web