Publish multi-platform images

.gitea/workflows/ci.yaml

@@ -53,6 +53,7 @@ jobs:
       - name: Build and Push Image
         env:
           KO_DEFAULTBASEIMAGE: gcr.io/distroless/static-debian12:nonroot
+          KO_DEFAULTPLATFORMS: linux/amd64,linux/arm64
         run: |
           push_host="$(git remote get-url origin | sed -E 's#^[a-z]+://([^/]+)/.*#\1#')"
           export KO_DOCKER_REPO="${push_host}/${GITHUB_REPOSITORY}"

Dockerfile

@@ -2,12 +2,15 @@ FROM golang:1.26 AS build
 
 WORKDIR /src
 
+ARG TARGETOS=linux
+ARG TARGETARCH
+
 COPY go.mod go.sum ./
 RUN go mod download
 
 COPY . .
 
-RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -trimpath -ldflags='-s -w' -o /out/alma-assignments-reporter .
+RUN CGO_ENABLED=0 GOOS=${TARGETOS} GOARCH=${TARGETARCH} go build -trimpath -ldflags='-s -w' -o /out/alma-assignments-reporter .
 
 FROM scratch