diff --git a/.github/workflows/container-image.yaml b/.github/workflows/container-image.yaml
new file mode 100644
index 0000000..4334884
--- /dev/null
+++ b/.github/workflows/container-image.yaml
@@ -0,0 +1,48 @@
+name: roundcubemail-docker-dev image
+
+on:
+  push:
+    paths:
+      - 'Dockerfile'
+      - 'docker-entrypoint-dev.sh'
+      - '.github/workflows/container-image.yml'
+  schedule:
+    # Rebuild automatically each monday early morning
+    - cron: "42 3 * * 1"
+
+jobs:
+  build_and_push:
+    strategy:
+      fail-fast: false
+
+    name: build and push
+    runs-on: ubuntu-latest
+    # Set the permissions granted to the GITHUB_TOKEN for the actions in this job.
+    permissions:
+      contents: read
+      packages: write
+      attestations: write
+      id-token: write
+    steps:
+      - name: Check actor permission
+        uses: skjnldsv/check-actor-permission@v2
+        with:
+          require: admin
+      - name: Check out the repo
+        uses: actions/checkout@v4
+      - name: Log in to the Container registry
+        uses: docker/login-action@v1
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Build and push Docker image
+        id: push
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          push: true
+          #platforms: linux/amd64,linux/arm64
+          tags: "ghcr.io/pabzm/roundcubemail-docker-dev:latest"
+
+
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..ca531cd
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,16 @@
+FROM docker.io/roundcube/roundcubemail
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+RUN apt-get update \
+ && apt-get install -y --no-install-recommends npm git \
+ && apt-get clean
+
+COPY --chmod=0755 docker-entrypoint-dev.sh /
+
+VOLUME /var/www/html
+
+ENTRYPOINT ["/docker-entrypoint-dev.sh"]
+
+# This CMD is from the upstream image, don't know why it needs to be repeated.
+CMD ["apache2-foreground"]
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..e903bcf
--- /dev/null
+++ b/README.md
@@ -0,0 +1,6 @@
+Roundcubemail Docker Dev
+========================
+
+A container image to easily run Roundcubemail from its repository code.
+
+This image expects to be run with Roundcubemail's repository code mounted to `/var/www/html`, and prepares it to be runnable.
diff --git a/docker-entrypoint-dev.sh b/docker-entrypoint-dev.sh
new file mode 100644
index 0000000..bba7cd2
--- /dev/null
+++ b/docker-entrypoint-dev.sh
@@ -0,0 +1,24 @@
+#!/bin/bash -ex
+
+if [[ -f /var/www/html/index.php ]]; then
+	# Run the steps necessary to actually use the repository code.
+	cd /var/www/html
+	# This first command is also in the upstream entrypoint-script, but it needs to run before the PHP-scripts do, so we also need it here.
+	composer --prefer-dist --no-dev --no-interaction --optimize-autoloader install
+	# Download external Javascript dependencies.
+	bin/install-jsdeps.sh
+	# Minify all JS files
+	bin/jsshrink.sh
+	# Translate elastic's styles to CSS.
+	cd skins/elastic
+	npx lessc --clean-css="--s1 --advanced" styles/styles.less > styles/styles.min.css
+	npx lessc --clean-css="--s1 --advanced" styles/print.less > styles/print.min.css
+	npx lessc --clean-css="--s1 --advanced" styles/embed.less > styles/embed.min.css
+	cd -
+	# Update cache-buster parameters in CSS-URLs.
+	bin/updatecss.sh
+	# Minify all CSS files.
+	bin/cssshrink.sh
+fi
+
+exec /docker-entrypoint.sh "$@"