Merge pull request github#23 from github/remove-initialize-command

Remove temporary initializeCommand

Author: dmgardiner25

.devcontainer/devcontainer.json

@@ -4,7 +4,6 @@
     "cpus": 4
   },
   "waitFor": "onCreateCommand",
-  "initializeCommand": "docker system prune -af",
   "updateContentCommand": "python3 -m pip install -r requirements.txt",
   "postCreateCommand": "",
   "customizations": {