Add arm64 image build and docker manifest

.circleci/config.yml

@@ -122,6 +122,7 @@ jobs:
 
       - setup_remote_docker:
           version: 20.10.11
+          docker_layer_caching: true
 
       - run:
           name: Install goreleaser

.goreleaser.yml

@@ -50,24 +50,45 @@ nfpms:
     - deb
     - rpm
 dockers:
-  -
-    id: docker-build
+  - image_templates:
+    - &amd_image "stackexchange/{{.ProjectName}}:{{ .Version }}-amd64"
     goos: linux
     goarch: amd64
-    image_templates:
-    - "stackexchange/{{.ProjectName}}:latest"
-    - "stackexchange/{{.ProjectName}}:{{ .Version }}"
     use: buildx
     ids:
     - build
     build_flag_templates:
     - "--pull"
-    - "--label=org.opencontainers.image.created={{.Date}}"
-    - "--label=org.opencontainers.image.name={{.ProjectName}}"
-    - "--label=org.opencontainers.image.revision={{.FullCommit}}"
-    - "--label=org.opencontainers.image.version={{.Version}}"
-    - "--label=org.opencontainers.image.source={{.GitURL}}"
+    - "--label=org.opencontainers.image.created={{ .Date }}"
+    - "--label=org.opencontainers.image.name={{ .ProjectName }}"
+    - "--label=org.opencontainers.image.revision={{ .FullCommit }}"
+    - "--label=org.opencontainers.image.version={{ .Version }}"
+    - "--label=org.opencontainers.image.source={{ .GitURL }}"
     - "--platform=linux/amd64"
+  - image_templates:
+    - &arm_image "stackexchange/{{.ProjectName}}:{{ .Version }}-arm64"
+    goos: linux
+    goarch: arm64
+    use: buildx
+    ids:
+    - build
+    build_flag_templates:
+    - "--pull"
+    - "--label=org.opencontainers.image.created={{ .Date }}"
+    - "--label=org.opencontainers.image.name={{ .ProjectName }}"
+    - "--label=org.opencontainers.image.revision={{ .FullCommit }}"
+    - "--label=org.opencontainers.image.version={{ .Version }}"
+    - "--label=org.opencontainers.image.source={{ .GitURL }}"
+    - "--platform=linux/arm64"
+docker_manifests:
+  - name_template: "stackexchange/{{.ProjectName}}:{{ .Version }}"
+    image_templates:
+      - *amd_image
+      - *arm_image
+  - name_template: "stackexchange/{{.ProjectName}}:latest"
+    image_templates:
+      - *amd_image
+      - *arm_image
 checksum:
   name_template: 'checksums.txt'
 snapshot:

Dockerfile

@@ -1,29 +1,13 @@
-FROM golang:1.19.0-alpine3.16@sha256:0eb08c89ab1b0c638a9fe2780f7ae3ab18f6ecda2c76b908e09eb8073912045d AS build
+# syntax = docker/dockerfile:1.4
 
-WORKDIR /go/src/github.com/StackExchange/dnscontrol
+FROM alpine:3.16.2@sha256:bc41182d7ef5ffc53a40b044e725193bc10142a1243f395ee852a8d9730fc2ad as RUN
 
-ARG BUILD_VERSION
+RUN --mount=type=cache,target=/var/cache/apk \
+    apk update \
+    && apk add ca-certificates \
+    && update-ca-certificates
 
-ENV GO111MODULE on
-
-COPY . .
-
-# build dnscontrol
-RUN apk update \
-    && apk add --no-cache ca-certificates curl gcc build-base git \
-    && update-ca-certificates \
-    && go build -v -trimpath -buildmode=pie -ldflags="-s -w -X main.SHA=${BUILD_VERSION}"
-
-# Validation check
-RUN cp dnscontrol /go/bin/dnscontrol
-RUN dnscontrol version
-
-# -----
-
-FROM alpine:3.16.2@sha256:bc41182d7ef5ffc53a40b044e725193bc10142a1243f395ee852a8d9730fc2ad
-
-COPY --from=build /etc/ssl/certs /etc/ssl/certs
-COPY --from=build /go/bin/dnscontrol /usr/local/bin
+COPY dnscontrol /usr/local/bin/
 
 WORKDIR /dns