chore(ci): set image platform on image build (#811)

Co-authored-by: Simon Aronsson <simme@arcticbit.se>

.github/workflows/pull-request.yml

@@ -69,5 +69,5 @@ jobs:
       - name: Build
         uses: goreleaser/goreleaser-action@v2
         with:
-          version: v0.104.1
+          version: v0.155.0
           args: --snapshot --skip-publish --debug

.github/workflows/release.yml

@@ -70,10 +70,10 @@ jobs:
         uses: actions/setup-go@v2
         with:
           go-version: 1.15.x
-      - name: Run goreleaser
+      - name: Build
         uses: goreleaser/goreleaser-action@v2
         with:
-          version: v0.104.1
+          version: v0.155.0
           args: --debug
       - name: Enable experimental docker features
         run: |

dockerfiles/Dockerfile

@@ -1,4 +1,4 @@
-FROM alpine:3.11 as alpine
+FROM --platform=$BUILDPLATFORM alpine:3.11 as alpine
 
 RUN apk add --no-cache \
     ca-certificates \

goreleaser.yml

@@ -9,7 +9,8 @@ build:
     - 386
     - arm
     - arm64
-archive:
+archives:
+  - 
     name_template: "{{.ProjectName}}_{{.Os}}_{{.Arch}}"
     format: tar.gz
     replacements:
@@ -26,6 +27,8 @@ archive:
       - LICENSE.md
 dockers:
   -
+    use_buildx: true
+    build_flag_templates: [ "--platform=linux/amd64" ]
     goos: linux
     goarch: amd64
     goarm: ''
@@ -36,6 +39,8 @@ dockers:
     binaries:
       - watchtower
   - 
+    use_buildx: true
+    build_flag_templates: [ "--platform=linux/386" ]
     goos: linux
     goarch: 386
     goarm: ''
@@ -46,6 +51,8 @@ dockers:
     binaries:
       - watchtower
   - 
+    use_buildx: true
+    build_flag_templates: [ "--platform=linux/arm/v6" ]
     goos: linux
     goarch: arm
     goarm: 6
@@ -56,6 +63,8 @@ dockers:
     binaries:
       - watchtower
   - 
+    use_buildx: true
+    build_flag_templates: [ "--platform=linux/arm64/v8" ]
     goos: linux
     goarch: arm64
     goarm: ''