feat: even more ricing of the devcontainer

Signed-off-by: Devin Buhl <devin@buhl.casa>

.devcontainer/devcontainer.json

@@ -2,7 +2,6 @@
   "$schema": "https://raw.githubusercontent.com/devcontainers/spec/main/schemas/devContainer.schema.json",
   "name": "Flux Cluster Template",
   "image": "ghcr.io/onedr0p/flux-cluster-template/devcontainer:base",
-  "postCreateCommand": {
-    "deps": "${containerWorkspaceFolder}/.devcontainer/postCreateCommand.sh"
-  }
+  "postCreateCommand": "bash ${containerWorkspaceFolder}/.devcontainer/postCreateCommand.sh",
+  "postStartCommand": "git config --global --add safe.directory ${containerWorkspaceFolder}"
 }