Add Dockerfile and docker-compose for easy deployment

Dockerfile

@@ -0,0 +1,10 @@
+FROM python:3.12-slim
+
+WORKDIR /app
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY server.py .
+
+CMD ["python", "server.py"]

docker-compose.yml

@@ -0,0 +1,7 @@
+services:
+  planka-mcp:
+    build: .
+    environment:
+      - PLANKA_URL=${PLANKA_URL:-http://localhost:3000}
+      - PLANKA_TOKEN=${PLANKA_TOKEN}
+    restart: always