diff --git a/.gitea/workflows/ci.yaml b/.gitea/workflows/ci.yaml
index f36ef0f..8bd9c23 100644
--- a/.gitea/workflows/ci.yaml
+++ b/.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}"
diff --git a/Dockerfile b/Dockerfile
index dc9b781..51abd32 100644
--- a/Dockerfile
+++ b/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