About

Stunnel Docker image based on Alpine Linux.

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Features

• Run as non-root user
• Multi-platform image

Supported platforms

• linux/amd64
• linux/arm64
• linux/arm/v7

Usage

This docker can be used with an existing stunnel configuration using a volume (/etc/stunnel).

Otherwise you can just adapt the environment variables to run a simple configuration.

Docker Compose

Docker compose is the recommended way to run this image. Edit the compose file with your preferences and run the following command:

git clone https://github.com/k44sh/stunnel.git && cd stunnel
mkdir stunnel
docker compose up -d
docker compose logs -f

Command line

You can also use the following minimal command:

docker run --rm -d --name stunnel -p 389:389 \
-e CONNECT_HOST=ldap.google.com -e CONNECT_PORT=636 \
-v $(pwd)/stunnel.crt:/etc/stunnel/stunnel.crt \
-v $(pwd)/stunnel.key:/etc/stunnel/stunnel.key \
k44sh/stunnel:latest

Environment variables

• TZ: The timezone assigned to the container (default UTC)
• PUID: User id (default 1000)
• PGID: User group id (default 1000)
• LISTEN_HOST: Listening server address (default 0.0.0.0)
• LISTEN_PORT: Listening server port (default 389)
• CONNECT_HOST: Remote server address (default ldap.google.com)
• CONNECT_PORT: Remote server port (default 636)
• HEALTHCHECK: Host for healthcheck (default 127.0.0.1)

Upgrade

To upgrade, pull the newer image and launch the container:

docker compose pull
docker compose up -d