Update GHCR doc, remove old Dockerfile

docs/source/install/index.rst

@@ -193,14 +193,15 @@ To pull and run with local files:
 
 .. code-block:: shell
 
-    docker run --rm -it --volume=/path/to/files:/files ghcr.io/OpenFAST/openfast:latest openfast /files/main.fst
+    docker run --rm -it --volume=/path/to/files:/files ghcr.io/openfast/openfast:latest openfast /files/main.fst
 
 For running the container interactively:
 
 .. code-block:: shell
 
-    docker run --rm -it --volume=/path/to/files:/files ghcr.io/OpenFAST/openfast:latest /bin/bash
+    docker run --rm -it --volume=/path/to/files:/files ghcr.io/openfast/openfast:latest /bin/bash
 
+To pull a specific release, substitute the version number in place of `latest` in the above commands (i.e. `ghcr.io/openfast/openfast:3.5.3`).
 
 Build your own images
 ---------------------

share/docker/README.md

@@ -8,7 +8,7 @@ and `openfast` added. The image built by this `Dockerfile` can be customised at
 
 ## Image registry
 Production images of OpenFAST for the `linux/amd64` platform are available on the 
-[NREL docker hub](https://hub.docker.com/r/nrel/openfast).
+[NREL docker hub](https://hub.docker.com/r/nrel/openfast) and OpenFAST's [GitHub Container Registry](https://github.com/OpenFAST/openfast/pkgs/container/openfast).
 
 ## Build arguments
 Provide any of the following build arguments to customise the image at build time. 
@@ -25,7 +25,7 @@ For example, to build OpenFAST v3.5.3 for the `linux/amd64` platform and set `CM
 ```shell
 # Run from the root of this repository.
 git checkout v3.5.3
-docker build -f share/docker/Dockerfile -t openfast:3.5.3 --platform=linux/amd64 --build-arg=CMAKE_OPTIONS='-DBUILD_TESTING=ON' .
+docker build -f share/docker/Dockerfile -t openfast:3.5.3 --platform=linux/amd64 --build-arg=CMAKE_OPTIONS='-DCMAKE_BUILD_TYPE=RELEASE' .
 ```
 
 **NOTE:** This version of the `Dockerfile` is only available in v3.5.3 and up of this repository. To build earlier