diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 0000000..ba25884
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,50 @@
+name: Build
+
+on:
+  pull_request:
+  push:
+    branches:
+    - main
+
+permissions:
+  contents: read
+  id-token: write
+  packages: write
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repo
+      uses: actions/checkout@v4
+
+    - name: Set up Docker Buildx
+      id: buildx
+      uses: docker/setup-buildx-action@v2
+
+    - name: Log in to the Container registry
+      uses: docker/login-action@v3
+      with:
+        registry: ghcr.io
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Extract metadata (tags, labels) for Docker
+      id: meta
+      uses: docker/metadata-action@v4
+      with:
+        images: ghcr.io/${{ github.repository }}
+
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v2
+
+    - name: Build and push Docker image
+      id: push
+      uses: docker/build-push-action@v4
+      with:
+        file: Containerfile
+        platforms: linux/amd64,linux/arm64/v8
+        push: true
+        tags: ${{ steps.meta.outputs.tags }}
+        labels: ${{ steps.meta.outputs.labels }}
diff --git a/Containerfile b/Containerfile
new file mode 100644
index 0000000..0923962
--- /dev/null
+++ b/Containerfile
@@ -0,0 +1,18 @@
+FROM debian:trixie-slim
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+RUN groupadd -g 999 dovecot
+RUN useradd -d /var/lib/dovecot -r -s /bin/false -u 999 -g 999 dovecot
+RUN useradd -d /var/lib/dovecot -r -s /bin/false -u 999 -g 999 -o dovenull
+
+RUN apt-get update && \
+    apt-get upgrade -y && \
+    apt-get install -y --no-install-recommends dovecot-core && \
+    rm -rf /etc/dovecot/* /run/*
+
+VOLUME ["/var/lib/dovecot"]
+
+USER dovecot
+ENTRYPOINT ["/usr/sbin/dovecot", "-F"]
+CMD []