Add devcontainer configuration and update Dependabot settings

.devcontainer/devcontainer.json

@@ -0,0 +1,42 @@
+{
+	"name": "GitHub Actions (TypeScript)",
+	"image": "mcr.microsoft.com/devcontainers/typescript-node:20",
+	"postCreateCommand": "npm install",
+	"customizations": {
+		"codespaces": {
+			"openFiles": [
+				"README.md"
+			]
+		},
+		"vscode": {
+			"extensions": [
+				"bierner.markdown-preview-github-styles",
+				"davidanson.vscode-markdownlint",
+				"dbaeumer.vscode-eslint",
+				"esbenp.prettier-vscode",
+				"github.copilot",
+				"github.vscode-github-actions",
+				"github.vscode-pull-request-github",
+				"me-dutour-mathieu.vscode-github-actions",
+				"redhat.vscode-yaml",
+				"rvest.vs-code-prettier-eslint",
+				"yzhang.markdown-all-in-one"
+			],
+			"settings": {
+				"editor.defaultFormatter": "esbenp.prettier-vscode",
+				"editor.tabSize": 2,
+				"editor.formatOnSave": true,
+				"markdown.extension.list.indentationSize": "adaptive",
+				"markdown.extension.italic.indicator": "_",
+				"markdown.extension.orderedList.marker": "one"
+			}
+		}
+	},
+	"remoteEnv": {
+		"GITHUB_TOKEN": "${localEnv:GITHUB_TOKEN}"
+	},
+	"features": {
+		"ghcr.io/devcontainers/features/github-cli:1": {},
+		"ghcr.io/devcontainers-contrib/features/prettier:1": {}
+	}
+}

.github/dependabot.yml

@@ -13,3 +13,10 @@ updates:
       prefix: "[Chore] "
     schedule:
       interval: weekly
+
+  - package-ecosystem: devcontainers
+    directory: /
+    commit-message:
+      prefix: "[Chore] "
+    schedule:
+      interval: weekly