chore: update devcontainer

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

.devcontainer/postCreateCommand.sh

@@ -1,5 +1,13 @@
 #!/usr/bin/env bash
 
+# Hook direnv into zsh
+if [[ -f "/home/vscode/.zshrc" ]]; then
+    echo -e 'eval "$(direnv hook zsh)"' >> /home/vscode/.zshrc
+fi
+
+# Export the direnv environment variables
+task workstation:direnv
+
 # Remove the .venv directory
 rm -rf .venv