Merge pull request #35 from SShah7433/feature/cross-platform-build

Automatically create amd64 and arm64 Docker images

.github/workflows/main.yml

@@ -0,0 +1,43 @@
+# This is a basic workflow to help you get started with Actions
+
+name: CI
+
+# Controls when the action will run. Triggers the workflow on push or pull request
+# events but only for the master branch
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+  # This workflow contains a single job called "build"
+  build:
+    # The type of runner that the job will run on
+    runs-on: ubuntu-latest
+
+    # Steps represent a sequence of tasks that will be executed as part of the job
+    steps:
+    # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
+    - uses: actions/checkout@v2
+
+    # Runs a single command using the runners shell
+    - name: Build and Push Docker Image (Linux - AMD64)
+      uses: docker/build-push-action@v1
+      with:
+        username: ${{ secrets.DOCKER_USERNAME }}
+        password: ${{ secrets.DOCKER_PASSWORD }}
+        repository: ekofr/pihole-exporter
+        tag_with_sha: true
+        tags: amd64
+        build_args: OS=linux,ARCH=amd64
+    - name: Build and Push Docker Image (Linux - ARM64)
+      uses: docker/build-push-action@v1
+      with:
+        username: ${{ secrets.DOCKER_USERNAME }}
+        password: ${{ secrets.DOCKER_PASSWORD }}
+        repository: ekofr/pihole-exporter
+        tag_with_sha: true
+        tags: arm64
+        build_args: OS=linux,ARCH=arm64

Dockerfile

@@ -1,5 +1,8 @@
 FROM golang:alpine as builder
 
+ARG OS=linux
+ARG ARCH=amd64
+
 WORKDIR /go/src/github.com/eko/pihole-exporter
 COPY . .
 
@@ -7,7 +10,7 @@ RUN apk update && \
     apk --no-cache add git alpine-sdk upx
 
 RUN GO111MODULE=on go mod vendor
-RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -ldflags '-s -w' -o binary ./
+RUN CGO_ENABLED=0 GOOS=$OS GOARCH=$ARCH go build -ldflags '-s -w' -o binary ./
 RUN upx -f --brute binary
 
 FROM scratch