feat: DevContainerにpnpmをインストールする際、corepackを使うようにする (#13821)

.devcontainer/devcontainer.json

@@ -4,12 +4,10 @@
 	"service": "app",
 	"workspaceFolder": "/workspace",
 	"features": {
-		"ghcr.io/devcontainers-contrib/features/pnpm:2": {
-			"version": "8.9.2"
-		},
 		"ghcr.io/devcontainers/features/node:1": {
 			"version": "20.12.2"
-		}
+		},
+		"ghcr.io/devcontainers-contrib/features/corepack:1": {}
 	},
 	"forwardPorts": [3000],
 	"postCreateCommand": "sudo chmod 755 .devcontainer/init.sh && .devcontainer/init.sh",

.devcontainer/init.sh

@@ -4,6 +4,8 @@ set -xe
 
 sudo chown -R node /workspace
 git submodule update --init
+corepack install
+corepack enable
 pnpm config set store-dir /home/node/.local/share/pnpm/store
 pnpm install --frozen-lockfile
 cp .devcontainer/devcontainer.yml .config/default.yml