diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index a9b7202..958db46 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -17,6 +17,7 @@
                 "exiasr.hadolint",
                 "kevinrose.vsc-python-indent",
                 "mosapride.zenkaku",
+                "ms-azuretools.vscode-docker",
                 "ms-python.python",
                 "njpwerner.autodocstring",
                 "oderwat.indent-rainbow",
diff --git a/.vscode/extensions.json b/.vscode/extensions.json
new file mode 100644
index 0000000..e9a80a2
--- /dev/null
+++ b/.vscode/extensions.json
@@ -0,0 +1,19 @@
+{
+    "recommendations": [
+        "charliermarsh.ruff",
+        "codezombiech.gitignore",
+        "eamodio.gitlens",
+        "exiasr.hadolint",
+        "kevinrose.vsc-python-indent",
+        "mosapride.zenkaku",
+        "ms-azuretools.vscode-docker",
+        "ms-python.python",
+        "ms-vscode-remote.remote-containers",
+        "njpwerner.autodocstring",
+        "oderwat.indent-rainbow",
+        "pkief.material-icon-theme",
+        "shardulm94.trailing-spaces",
+        "usernamehw.errorlens",
+        "yzhang.markdown-all-in-one",
+    ]
+}
diff --git a/.vscode/settings.json b/.vscode/settings.json
index bb63516..6c84505 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -6,5 +6,6 @@
         },
         "editor.formatOnSave": true,
     },
-    "files.insertFinalNewline": true
+    "files.insertFinalNewline": true,
+    "files.trimTrailingWhitespace": true
 }
diff --git a/README.md b/README.md
index db7bbfa..ada50d2 100644
--- a/README.md
+++ b/README.md
@@ -33,6 +33,7 @@ The following are the features.
     - [eamodio.gitlens](https://marketplace.visualstudio.com/items?itemName=eamodio.gitlens)
     - [kevinrose.vsc-python-indent](https://marketplace.visualstudio.com/items?itemName=kevinrose.vsc-python-indent)
     - [mosapride.zenkaku](https://marketplace.visualstudio.com/items?itemName=mosapride.zenkaku)
+    - [ms-azuretools.vscode-docker](https://marketplace.visualstudio.com/items?itemName=ms-azuretools.vscode-docker)
     - [ms-python.python](https://marketplace.visualstudio.com/items?itemName=ms-python.python)
     - [njpwerner.autodocstring](https://marketplace.visualstudio.com/items?itemName=njpwerner.autodocstring)
     - [oderwat.indent-rainbow](https://marketplace.visualstudio.com/items?itemName=oderwat.indent-rainbow)
@@ -76,11 +77,14 @@ ignore = [
 The `.pre-commit-config.yaml` file can contain scripts to be executed before commit.
 
 ```sh
-# Linter
+# Python Formatter
+ruff format .
+
+# Python Linter
 ruff check . --fix
 
-# Formatter
-ruff format .
+# Docker Linter
+hodolint Dockerfile
 ```
 
 ### Install