Remove documentation of building container images with jib (#4430)

This is not inline with the official container image.

docs/source/building-container-images.rst

@@ -1,54 +0,0 @@
-=========================
-Building container images
-=========================
-
-To build a container image of Corda you can use the Jib gradle tasks. See the `documentation of the Jib gradle plugin <https://github.com/GoogleContainerTools/jib/tree/master/jib-gradle-plugin>`_ for details.
-
-Building the image
-==================
-
-To build an image locally you can use the following command. Note that you do not require Docker.
-
-.. sourcecode:: shell
-
-        ./gradlew node:jib --image <registry>/<image>:<tag>
-
-If you prefer building to a Docker deamon you can use
-
-.. sourcecode:: shell
-
-        ./gradlew node:jibDockerBuild --image <registry>/<image>:<tag>
-
-Running the image
-=================
-
-The Corda application expects its config file in ``/config/node.conf``, make
-sure you mount the config file to that location. You might also want to mount
-``/credentials`` and ``/persistence.mv.db`` (if you're using H2) in order to
-preserve the credentials and node data between container restarts.
-
-The JVM options are currently hardcoded in ``node/build.gradle`` in the
-``jib.container`` section.
-
-Below is an example directory layout and command to run your image with Docker.
-Make sure to run ``touch persistence.mv.db`` befor starting the container,
-otherwise a new directory will be created by Docker.
-
-::
-
-        .
-        ├── additional-node-infos
-        ├── certificates
-        ├── config
-        │   └── node.conf
-        ├── network-parameters
-        └── persistence.mv.db
-
-.. sourcecode:: shell
-
-        docker run --rm -it -v ${PWD}/certificates:/certificates \
-                            -v ${PWD}/config:/config \
-                            -v ${PWD}/network-parameters:/network-parameters \
-                            -v ${PWD}/persistence.mv.db:/persistence.mv.db \
-                            -v ${PWD}/additional-node-infos:/additional-node-infos \
-                            <registry>/<image>:<tag>

docs/source/index.rst

@@ -52,7 +52,6 @@ We look forward to seeing what you can do with Corda!
    azure-vm.rst
    aws-vm.rst
    loadtesting.rst
-   building-container-images.rst
    cli-application-shell-extensions.rst
 
 .. Documentation is not included in the pdf unless it is included in a toctree somewhere
@@ -105,4 +104,4 @@ We look forward to seeing what you can do with Corda!
    corda-network/index.md
    corda-network/governance-structure.md
    corda-network/governance-guidelines.md
-   corda-network/joining-corda-network.md
+   corda-network/joining-corda-network.md