listmonk

Chainguard Container for listmonk

High performance, self-hosted, newsletter and mailing list manager with a modern dashboard. Single binary app.

Chainguard Containers are regularly-updated, secure-by-default container images.

Download this Container Image

For those with access, this container image is available on cgr.dev:

docker pull cgr.dev/ORGANIZATION/listmonk:latest

Be sure to replace the ORGANIZATION placeholder with the name used for your organization's private repository within the Chainguard Registry.

Compatibility Notes

listmonk is a standalone, newsletter and mailing list manager. It uses a PostgreSQL database as its data store. Chainguard's listmonk container image is comparable to the upstream listmonk image available on Docker Hub.

Getting Started

listmonk requires a PostgreSQL database. Upstream provides documentation under https://listmonk.app/docs/ .

Running with Docker

listmonk provides a docker-compose.yml which can be used together with the Chainguard image:

curl -s -O --fail https://raw.githubusercontent.com/knadh/listmonk/refs/heads/master/docker-compose.yml
# use the Chainguard listmonk image
sed -i "s|image: listmonk/listmonk:latest|image: cgr.dev/ORGANIZATION/listmonk|" docker-compose.yml
# use the Chainguard postgres image
sed -i "s|image: postgres:|image: cgr.dev/ORGANIZATION/postgres|" docker-compose.yml
docker compose up -d

Access the application at http://localhost:9000.

Deploying with Helm on Kubernetes

listmonk can be deployed to Kubernetes using the community Helm chart with Chainguard images.

Create some credentials required for the database access:

LISTMONK_DB_PASSWORD=$(openssl rand -base64 32)
POSTGRES_PASSWORD=$(openssl rand -base64 32)

First, deploy PostgreSQL using the Chainguard IAMGuarded PostgreSQL Helm chart:

helm install postgresql oci://cgr.dev/$ORGANIZATION/iamguarded-charts/postgresql \
  --namespace listmonk \
  --create-namespace \
  --set auth.username=listmonk \
  --set auth.password=$LISTMONK_DB_PASSWORD \
  --set auth.database=listmonk \
  --set auth.postgresPassword=$POSTGRES_PASSWORD

Wait for PostgreSQL to be ready:

kubectl wait --for=condition=ready pod -l app.kubernetes.io/name=postgresql -n listmonk --timeout=300s

Create a values file for listmonk:

cat <<EOF > values.yaml
# values.yaml
listmonk:
  image:
    repository: cgr.dev/ORGANIZATION/listmonk
    tag: latest

postgres:
  enabled: false  # Use external PostgreSQL
  hostname: postgresql.listmonk.svc.cluster.local
  database: listmonk
  user: listmonk
  password: $LISTMONK_DB_PASSWORD
EOF

Install listmonk with the Helm chart:

helm install listmonk listmonk \
  --repo https://th0th.github.io/helm-charts \
  --namespace listmonk \
  --values values.yaml

Verify the deployment:

kubectl get pods -n listmonk

Access the application by port-forwarding or through the LoadBalancer service:

kubectl port-forward -n listmonk svc/listmonk-listmonk 9000:80

Navigate to http://localhost:9000 to complete the initial setup.

What are Chainguard Containers?

Chainguard's free tier of Starter container images are built with Wolfi, our minimal Linux undistro.

All other Chainguard Containers are built with Chainguard OS, Chainguard's minimal Linux operating system designed to produce container images that meet the requirements of a more secure software supply chain.

The main features of Chainguard Containers include:

• Minimal design, without unnecessary software bloat
• Daily builds to ensure container images are up-to-date with available security patches
• High quality build-time SBOMs attesting to the provenance of all artifacts within the image
• Verifiable signatures provided by Sigstore
• Reproducible builds with Cosign and apko (read more about reproducibility)

For cases where you need container images with shells and package managers to build or debug, most Chainguard Containers come paired with a development, or -dev, variant.

In all other cases, including Chainguard Containers tagged as :latest or with a specific version number, the container images include only an open-source application and its runtime dependencies. These minimal container images typically do not contain a shell or package manager.

Although the -dev container image variants have similar security features as their more minimal versions, they include additional software that is typically not necessary in production environments. We recommend using multi-stage builds to copy artifacts from the -dev variant into a more minimal production image.

Need additional packages?

To improve security, Chainguard Containers include only essential dependencies. Need more packages? Chainguard customers can use Custom Assembly to add packages, either through the Console, chainctl, or API.

To use Custom Assembly in the Chainguard Console: navigate to the image you'd like to customize in your Organization's list of images, and click on the Customize image button at the top of the page.

Learn More

Refer to our Chainguard Containers documentation on Chainguard Academy. Chainguard also offers VMs and Libraries — contact us for access.

Trademarks

This software listing is packaged by Chainguard. The trademarks set forth in this offering are owned by their respective companies, and use of them does not imply any affiliation, sponsorship, or endorsement by such companies.