feat: Implement Docker deployment with configurable SSE/STDIO modes and add get_current_time tool.

docker-compose.yml

@@ -0,0 +1,14 @@
+services:
+  caldev_mcp:
+    build: .
+    image: caldev_mcp
+    environment:
+      - MCP_MODE=${MCP_MODE:-SSE}
+    env_file:
+      - .env
+    ports:
+      - "8000:8000"
+    volumes:
+      - .:/app
+    stdin_open: true # Open stdin
+    tty: true        # Allocate pseudo-TTY