Reapply "Remove dockerupdate command"

This reverts commit c49b74943b79e2e4d68f2b286db1b629155c991b.

zsh/.config/zsh/dockerupdate.zsh

@@ -1,19 +0,0 @@
-# Update a docker container using docker compose
-#
-# Run this command safely by:
-#   - Ensuring the docker binary exists
-#   - The docker-compose.(yml|yaml) file is readable
-#   - Waiting 5 seconds between docker compose pulls to avoid being rate limited
-dockerupdate() {
-    # If either docker is not installed or docker-compose file is missing, do not run
-    if [[ ! -x "$(which docker)" ]] && ([[ ! -r docker-compose.yml ]] || [[ ! -r docker-compose.yaml ]]); then
-        return 1
-    else
-        until docker compose pull; do
-            docker compose pull
-            # Do not run this command too often
-            sleep 5
-        done
-        docker compose up -d
-    fi
-}