Revert "Remove dockerupdate command"

This reverts commit 1b7955fb8f2d787b94cb2e7312a77766a3daf6c2.

zsh/.config/zsh/dockerupdate.zsh

@@ -0,0 +1,19 @@
+# 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
+}