diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
new file mode 100644
index 0000000..0716833
--- /dev/null
+++ b/.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.copilot-chat",
+        "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/git-lfs:1": {},
+    "ghcr.io/devcontainers/features/github-cli:1": {},
+    "ghcr.io/devcontainers-contrib/features/prettier:1": {}
+  }
+}
diff --git a/.github/linters/.markdown-lint.yml b/.github/linters/.markdown-lint.yml
index 6d79773..cb5883f 100644
--- a/.github/linters/.markdown-lint.yml
+++ b/.github/linters/.markdown-lint.yml
@@ -5,3 +5,14 @@ MD004:
 # Ordered list item prefix
 MD029:
   style: one
+
+# Spaces after list markers
+MD030:
+  ul_single: 1
+  ol_single: 1
+  ul_multi: 1
+  ol_multi: 1
+
+# Code block style
+MD046:
+  style: fenced