Add Dockerfile, docker-compose.yml, .dockerignore

Dockerfile

@@ -0,0 +1,17 @@
+FROM nikolaik/python-nodejs:python3.11-nodejs20
+
+RUN apt-get update && apt-get install -y \
+    curl \
+    git \
+    docker.io \
+    && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /app
+
+COPY pyproject.toml requirements.txt* ./
+
+COPY . .
+
+RUN pip install -e .
+
+CMD ["python", "-m", "gateway.run"]