ci: update run container command action

Author: evilrobot-01

.github/run-container-command/action.yaml

@@ -1,14 +1,11 @@
-name: run container command
+name: Run Container Command
 description: |
-  This action runs a specified command within a container using an optionally specified image.
+  This action runs a specified command within a container using the `useink/ci` image.
 
 inputs:
   command:
-    description: The command to run
+    description: The command to be run within a container.
     required: true
-  output-info:
-    description: Whether to output environment information
-    default: 'true'
 
 runs:
   using: composite
@@ -18,6 +15,8 @@ runs:
       # Image can be edited at https://github.com/use-ink/docker-images
       uses: docker://evilrobot/useink:pr-4-stable
       env:
+        # Update the target directory used within the container to one which is within the path mounted to the host
+        # runner workspace path. Required for effective caching.
         CARGO_TARGET_DIR: "/github/workspace/${{ env.CARGO_TARGET_DIR }}"
       with:
         entrypoint: /bin/bash