Install Discourse Docker on Ubuntu 11

[IAmGav (Gavin Perch)]

i would suggest you follow the below instead of the url you provided

Install Discourse for development using Docker

Developing using Docker Since Discourse runs in Docker, you should be able to run Discourse directly from your source directory using a Discourse development container. Pros: No need to install any system dependencies, no configuration needed at all for setting up a development environment quickly. Cons: Will be slightly slower than the native dev environment on Ubuntu, and much slower than a native install on MacOS. See also Developing Discourse using a Dev Container …