refactor: docs and licenses

.devcontainer/Dockerfile

@@ -0,0 +1,9 @@
+FROM mcr.microsoft.com/vscode/devcontainers/base:ubuntu
+
+# Install Ruby and dependencies
+RUN apt-get update && \
+    apt-get install -y ruby-full build-essential zlib1g-dev nodejs && \
+    gem install bundler jekyll
+
+# Clean up
+RUN apt-get clean && rm -rf /var/lib/apt/lists/*

.devcontainer/devcontainer.json

@@ -0,0 +1,16 @@
+{
+    "name": "Jekyll Dev Container",
+    "build": {
+      "dockerfile": "Dockerfile"
+    },
+    "forwardPorts": [4000],
+    "postCreateCommand": "bundle install || true",
+    "customizations": {
+      "vscode": {
+        "extensions": [
+          "rebornix.Ruby"
+        ]
+      }
+    }
+  }
+