Multi architecture container image

.dockerignore

@@ -1,3 +1,10 @@
+# Don't bring in anything into the build context
+
 *
-!bin/**
-vendor
+
+# Bring in our source code and dependency listings
+
+!go.mod
+!go.sum
+!cmd/**
+!pkg/**

.github/workflows/build-docker-images.yml

@@ -0,0 +1,72 @@
+name: Deploy multi-architecture Docker images for chartmuseum with buildx
+
+on:
+  schedule:
+    - cron: '0 0 * * *' # everyday at midnight UTC
+  pull_request:
+    branches: master
+  push:
+    branches: master
+    tags:
+      - v*
+
+jobs:
+  buildx:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v2
+      -
+        name: Prepare
+        id: prepare
+        run: |
+          DOCKER_IMAGE=chartmuseum/chartmuseum
+          DOCKER_PLATFORMS=linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64,linux/386
+          VERSION=edge
+
+          if [[ $GITHUB_REF == refs/tags/* ]]; then
+            VERSION=${GITHUB_REF#refs/tags/v}
+          fi
+
+          if [ "${{ github.event_name }}" = "schedule" ]; then
+            VERSION=nightly
+          fi
+
+          TAGS="--tag ${DOCKER_IMAGE}:${VERSION} --tag ${DOCKER_IMAGE}:latest"
+
+          echo ::set-output name=docker_image::${DOCKER_IMAGE}
+          echo ::set-output name=version::${VERSION}
+          echo ::set-output name=buildx_args::--platform ${DOCKER_PLATFORMS} \
+            --build-arg revision=$(git rev-parse --short HEAD) \
+            ${TAGS} .
+      -
+        name: Set up Docker Buildx
+        uses: crazy-max/ghaction-docker-buildx@v3
+      -
+        name: Docker Buildx (build)
+        run: |
+          docker buildx build --no-cache --pull --output "type=image,push=false" ${{ steps.prepare.outputs.buildx_args }}
+      -
+        name: Docker Login
+        if: success() && github.event_name != 'pull_request'
+        env:
+          DOCKER_USERNAME: ${{ secrets.DOCKER_USERNAME }}
+          DOCKER_PASSWORD: ${{ secrets.DOCKER_PASSWORD }}
+        run: |
+          echo "${DOCKER_PASSWORD}" | docker login --username "${DOCKER_USERNAME}" --password-stdin
+      -
+        name: Docker Buildx (push)
+        if: success() && github.event_name != 'pull_request'
+        run: |
+          docker buildx build --output "type=image,push=true" ${{ steps.prepare.outputs.buildx_args }}
+      -
+        name: Docker Check Manifest
+        if: always() && github.event_name != 'pull_request'
+        run: |
+          docker run --rm mplatform/mquery ${{ steps.prepare.outputs.docker_image }}:${{ steps.prepare.outputs.version }}
+      -
+        name: Clear
+        if: always() && github.event_name != 'pull_request'
+        run: |
+          rm -f ${HOME}/.docker/config.json

Dockerfile

@@ -1,6 +1,29 @@
-FROM alpine:3.12.0
-RUN apk add --no-cache cifs-utils ca-certificates \
-    && adduser -D -u 1000 chartmuseum
-COPY bin/linux/amd64/chartmuseum /chartmuseum
-USER 1000
+# This will be our builder image
+
+FROM golang:alpine
+
+ARG version=0.12.0
+
+ARG revision=master
+
+COPY . /go/src/github.com/helm/chartmuseum
+
+WORKDIR /go/src/github.com/helm/chartmuseum
+
+RUN CGO_ENABLED=0 GO111MODULE=on go build \
+   -v --ldflags="-w -X main.Version=${version} -X main.Revision=${revision}" \
+   -o /chartmuseum \
+   cmd/chartmuseum/main.go
+
+
+# This will be the final image
+
+FROM alpine:latest
+
+RUN apk add --no-cache cifs-utils ca-certificates
+
+COPY --from=0 /chartmuseum /chartmuseum
+
+USER 1000:1000
+
 ENTRYPOINT ["/chartmuseum"]

Makefile

@@ -44,11 +44,6 @@ build-armv7:
 	go build -v --ldflags="-w -X main.Version=$(VERSION) -X main.Revision=$(REVISION)" \
 		-o bin/linux/armv7/chartmuseum cmd/chartmuseum/main.go  # linux
 
-container-armv7: build-armv7
-container-armv7:
-	docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
-	docker build . -t chartmuseum:v$(VERSION) -f Dockerfile.arm
-
 build-mac: export GOOS=darwin
 build-mac: export GOARCH=amd64
 build-mac: export CGO_ENABLED=0