ci: 添加Dockerfile

Dockerfile

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+# Ubuntu 20.04
+FROM ubuntu:focal
+
+# 切换默认shell为bash
+SHELL ["/bin/bash", "-c"]
+
+ADD ./ /asrt_server
+
+WORKDIR /asrt_server
+
+# 最小化源，缩短apt update时间(ca-certificates必须先安装才支持换tsinghua源)
+RUN echo 'deb http://archive.ubuntu.com/ubuntu/ focal main restricted' > /etc/apt/sources.list
+
+RUN apt update && apt install -y ca-certificates
+
+RUN echo $'\
+deb http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse\
+\n# deb-src http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse\n\
+deb http://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiverse\
+\n# deb-src http://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiverse\n\
+deb http://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiverse\
+\n# deb-src http://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiverse\n\
+deb http://mirrors.aliyun.com/ubuntu/ focal-proposed main restricted universe multiverse\
+\n# deb-src http://mirrors.aliyun.com/ubuntu/ focal-proposed main restricted universe multiverse\n\
+deb http://mirrors.aliyun.com/ubuntu/ focal-backports main restricted universe multiverse\
+\n# deb-src http://mirrors.aliyun.com/ubuntu/ focal-backports main restricted universe multiverse'\
+> /etc/apt/sources.list
+
+RUN apt update && apt install -y python3 python3-pip 
+
+RUN pip3 config set global.index-url https://pypi.tuna.tsinghua.edu.cn/simple
+
+RUN pip3 install wave scipy matplotlib tensorflow-cpu==2.5.2 numpy==1.19.2 requests
+
+RUN echo $'cd /asrt_server \n python3 asrserver.py' > /asrt_server/start.sh && chmod +x /asrt_server/start.sh
+
+# refer: https://docs.docker.com/engine/reference/builder/#expose
+EXPOSE 20000/tcp
+
+ENTRYPOINT ["/bin/bash", "/asrt_server/start.sh"]
+
+# https://docs.docker.com/engine/reference/commandline/build/#options
+# docker build --progress plain --rm --build-arg TAG=1.1.0 --tag asrt/api_server:1.1.0 .
+# https://docs.docker.com/engine/reference/commandline/run/#options
+# docker run --rm -it  -p 20000:20000 --name asrt -d asrt/api_server:1.1.0