migrate from outdated 🧶 to npm (#1054)

.devcontainer/devcontainer.json

@@ -35,7 +35,7 @@
 	"forwardPorts": [3000],
 
 	// Use 'postCreateCommand' to run commands after the container is created.
-	"postCreateCommand": "yarn install --frozen-lockfile && ./node_modules/.bin/prisma generate",
+	"postCreateCommand": "npm install --legacy-peer-deps && ./node_modules/.bin/prisma generate",
 
 	// Comment out to connect as root instead. More info: https://aka.ms/vscode-remote/containers/non-root.
 	"remoteUser": "node"