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Tailscale in Docker with Serve/Funnel Support
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README.md

Tailscale in Docker with Serve/Funnel Support

Note

The Tailscale Blog has a recent post which describes how to use the TS_SERVE_CONFIG variable to manage Serve and Funnel with the official image. You should probably use that approach now instead of this weird one-off cobbled together by some rando.

This modification of the official Tailscale Docker image makes it easy to Serve/Funnel another container without needing interactive configuration.

Read more about this implementation in the blog post.

Prereqs

If you're planning to use Funnel, you may want to build the ACL around a tag (such as tag:funnel) and automatically apply that tag when you generate the pre-auth key.

docker-compose

See docker-compose.yml for an example Compose config.

Expected environment variables:

Variable Name Example Description
TS_AUTHKEY tskey-auth-somestring-somelongerstring used for unattened auth of the new node, get one here
TS_HOSTNAME my-app optional Tailscale hostname for the new node
TS_STATE_DIR /var/lib/tailscale/ required directory for storing Tailscale state, this should be mounted to the container for persistence
TS_TAILSCALED_EXTRA_ARGS --verbose=1 optional additional flags for tailscaled
TS_EXTRA_ARGS --ssh optional additional flags for tailscale up
TS_SERVE_PORT 8080 optional application port to expose with Tailscale Serve
TS_FUNNEL 1 if set (to anything), will proxy TS_SERVE_PORT publicly with Tailscale Funnel

You can drop these in a .env file alongside your docker-compose.yml to load them automatically - see .env_template for an example.

Usage

  • Copy the example docker-compose.yml and modify to suit your needs.
  • Start: docker compose up -d --build
  • Tail Tailscale logs: docker compose logs tailscale --follow
  • Access tailscale`` container for troubleshooting: docker exec -it tailscale ash`
  • Stop: docker compose down

Credits

Based on Louis-Philippe Asselin's tailscale-docker.