Merge #6572: docs: prefer docker compose over docker-compose

5c36754 docs: prefer `docker compose` over `docker-compose` (pasta)

Pull request description:

  ## Issue being fixed or feature implemented
  docker-compose is obsolete, use `docker compose` instead.

  ## What was done?

  ## How Has This Been Tested?

  ## Breaking Changes

  ## Checklist:
    _Go over all the following points, and put an `x` in all the boxes that apply._
  - [ ] I have performed a self-review of my own code
  - [ ] I have commented my code, particularly in hard-to-understand areas
  - [ ] I have added or updated relevant unit/integration/functional/e2e tests
  - [ ] I have made corresponding changes to the documentation
  - [x] I have assigned this pull request to a milestone _(for repository code-owners and collaborators only)_

ACKs for top commit:
  knst:
    utACK 5c36754
  UdjinM6:
    utACK 5c36754

Tree-SHA512: a63f6ecb6e0ac3645ae45ccecc9836cc86cd25b3927c7f86c5780dfe190248ad9ef5f863fa968a2c2867b3a062bdaff5ac079dfcf6c80df444e1a5b85a19a103

Author: PastaPastaPasta

contrib/containers/README.md

@@ -11,7 +11,7 @@ leverages Docker [BuildKit](https://docs.docker.com/develop/develop-images/build
 the amount of repetitive code.
 
 As BuildKit is opt-in within many currently supported versions of Docker (as of this writing), you need to
-set the following environment variables before continuing. While not needed after the initial `docker-compose build`
+set the following environment variables before continuing. While not needed after the initial `docker compose build`
 (barring updates to the `Dockerfile`), we recommend placing this in your `~/.bash_profile`/`~/.zshrc` or equivalent
 
 ```bash
@@ -25,6 +25,6 @@ to run terminal commands from inside the terminal and build Dash Core.
 
 ```bash
 cd contrib/containers/develop
-docker-compose build
-docker-compose run container
+docker compose build
+docker compose run container
 ```