chore: update devcontainer

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

.devcontainer/postCreateCommand.sh

@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+
+# Remove the .venv directory
+rm -rf .venv
+
+# Create a new virtual environment
+task workstation:venv