Build and push docker image with many platforms

Signed-off-by: roman-kiselenko <roman.kiselenko.dev@gmail.com>

Author: roman-kiselenko

.github/workflows/docker.yml

@@ -11,6 +11,12 @@ env:
 jobs:
   build-and-push-image:
     runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        platform:
+          - linux/amd64
+          - linux/arm64
     permissions:
       contents: read
       packages: write
@@ -36,6 +42,7 @@ jobs:
         with:
           context: .
           push: true
+          platforms: ${{ matrix.platforms }}
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
       - name: Generate artifact attestation

.github/workflows/release_build.yml

@@ -16,10 +16,10 @@ jobs:
         with:
           fetch-depth: 0 # See: https://goreleaser.com/ci/actions/
 
-      - name: Set up Go 1.22.4
+      - name: Set up Go 1.23
         uses: actions/setup-go@v2
         with:
-          go-version: 1.22
+          go-version: 1.23
         id: go
 
       - name: Run GoReleaser

Dockerfile

@@ -1,4 +1,5 @@
-FROM golang:1.23-alpine3.20 AS builder
+FROM --platform=$BUILDPLATFORM golang:1.23-alpine3.20 AS builder
+ARG TARGETOS TARGETARCH
 
 RUN mkdir /app && mkdir -p /usr/local/src/smolgit
 WORKDIR /usr/local/src/smolgit
@@ -7,7 +8,7 @@ ADD ./go.mod ./go.sum ./
 RUN go mod download
 ADD . ./
 
-RUN go build -v -o /build/smolgit
+RUN GOOS=$TARGETOS GOARCH=$TARGETARCH go build -v -o /build/smolgit
 
 FROM alpine/git:2.45.2 AS runner