Remove Dockerfile. (#5534)

This PR removes an outdated Dockerfile that is not supported.

I also cleaned up the docs a bit to reflect Docker-related changes.

Resolves #5524.

Authors:
  - Bradley Dice (https://github.com/bdice)

Approvers:
  - Dante Gama Dessavre (https://github.com/dantegd)
  - Ray Douglass (https://github.com/raydouglass)

URL: #5534

.github/CODEOWNERS

@@ -15,6 +15,4 @@ build.sh           @rapidsai/cuml-cmake-codeowners
 .github/           @rapidsai/ops-codeowners
 ci/                @rapidsai/ops-codeowners
 conda/             @rapidsai/ops-codeowners
-**/Dockerfile      @rapidsai/ops-codeowners
-**/.dockerignore   @rapidsai/ops-codeowners
-dependencies.yaml   @rapidsai/ops-codeowners
+dependencies.yaml  @rapidsai/ops-codeowners

README.md

@@ -120,10 +120,9 @@ repo](https://github.com/rapidsai/notebooks-contrib).
 
 ## Installation
 
-See [the RAPIDS Release
-Selector](https://rapids.ai/start.html#rapids-release-selector) for the command
-line to install either nightly or official release cuML packages via Conda or
-Docker.
+See [the RAPIDS Release Selector](https://docs.rapids.ai/install#selector) for
+the command line to install either nightly or official release cuML packages
+via Conda or Docker.
 
 ## Build/Install from Source
 See the build [guide](BUILD.md).

docs/README.md

@@ -4,34 +4,11 @@
 #### [Build and install cuML](../BUILD.md)
 
 #### Generate the docs
-```shell script
+```bash
 bash build.sh cppdocs pydocs
 ```
 
 #### Once the process finishes, documentation can be found in build/html
-```shell script
-xdg-open build/html/api.html`
-```
-
-## Building via Docker
-Pull or create the cuML [docker container](https://hub.docker.com/r/rapidsai/rapidsai/).
-
-### Start cuML container:
-```
-docker run -p 8000:8000 -it cuml bash
-```
-
-### Setup container's conda env for building docs:
-```
-sudo sh setup.sh ${cuML-container-id}
-```
-
-### Build & host docs from container:
-```
-sudo sh build.sh ${cuML-container-id}
-```
-
-### Copy docs from container to host:
-```
-docker cp ${cuML-container-id}:/docs/build/html .
+```bash
+xdg-open build/html/api.html
 ```