ci: write a Dockerfile

Dockerfile

@@ -0,0 +1,15 @@
+FROM python:3.11-alpine
+
+ENV PYTHONUNBUFFERED 1
+
+WORKDIR /app
+
+COPY . .
+
+RUN apk add --no-cache curl unzip
+
+RUN curl -L https://raw.githubusercontent.com/XTLS/alpinelinux-install-xray/main/install-release.sh | ash
+
+RUN apk add --no-cache alpine-sdk libffi-dev && pip install --no-cache-dir -r /app/requirements.txt && apk del -r alpine-sdk libffi-dev curl unzip
+
+CMD ["python3", "marznode.py"]