Docker site on 8080

Run a site in a Docker container publishing port 8080, at https://site.example.com.

You need: workspace alice from Getting started.

1. Add Docker and Caddy to the machine

devmachine packages add docker
devmachine packages add caddy
devmachine sync

2. Put the workspace in the docker group

devmachine workspaces edit alice --set workspace.groups=[docker]
devmachine sync

A workspace in the docker group can do almost anything on the server, so this is a deliberate step, not the default — workspaces says why.

3. Run the container

devmachine ssh alice
docker run -d --name site -p 127.0.0.1:8080:80 nginx:alpine

Publishing on 127.0.0.1 is enough: Caddy reaches the container locally, and the port itself is never open to the internet.

4. Expose it

Back on your own computer:

devmachine expose add alice 8080 --host site.example.com --publish
devmachine sync

Check it: curl https://site.example.com serves the nginx welcome page, with a valid certificate.

Source: Docker — docker run, nginx image