【fly-iot飞凡物联】（15）：开源python的IOT项目，解决MySQL数据库问题，打包发布镜像到docker-hub仓库，减少体积，发布2024-01版本

前言

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fly-iot飞凡物联专栏：
https://blog.csdn.net/freewebsys/category_12219758.html

1，视频演示地址

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https://www.bilibili.com/video/BV1Nc411t7RU/?vd_source=4b290247452adda4e56d84b659b0c8a2

2，python进行docker打包，使用builder方式减少镜像体积

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镜像的dockerfile文件：

# 构建后端代码：
# docker build --tag flyiotadm/fly-iot-backend-python:v2024.01 .
# FROM python:3-alpine 使用最新的slim 版本。
# 
FROM python:3.6-slim as builder


# 设置debian的镜像源
RUN echo "deb http://mirrors.aliyun.com/debian/ bullseye main non-free contrib" > /etc/apt/sources.list && \
echo "deb-src http://mirrors.aliyun.com/debian/ bullseye main non-free contrib" >> /etc/apt/sources.list && \
echo "deb http://mirrors.aliyun.com/debian-security/ bullseye-security main" >> /etc/apt/sources.list && \
echo "deb-src http://mirrors.aliyun.com/debian-security/ bullseye-security main" >> /etc/apt/sources.list && \
echo "deb http://mirrors.aliyun.com/debian/ bullseye-updates main non-free contrib" >> /etc/apt/sources.list && \
echo "deb-src http://mirrors.aliyun.com/debian/ bullseye-updates main non-free contrib" >> /etc/apt/sources.list && \
echo "deb http://mirrors.aliyun.com/debian/ bullseye-backports main non-free contrib" >> /etc/apt/sources.list && \
echo "deb-src http://mirrors.aliyun.com/debian/ bullseye-backports main non-free contrib" >> /etc/apt/sources.list


# 设置python3的镜像源
RUN  pip3 config set global.index-url https://mirrors.aliyun.com/pypi/simple && \
pip3 config set install.trusted-host mirrors.aliyun.com 

# 安装需要的lib库
RUN  apt update && apt-get install -y locales libpq-dev python3-dev gcc g++ make

ADD requirements.txt /root/requirements.txt

# 最后安装依赖包，然后删除缓存和 pyc 文件，还可以节省40MB 空间。
RUN cd /root && pip3 install -r requirements.txt && rm -rf /root/.cache/ && \
    cd /usr/local/lib/python3.6/site-packages && find ./ -name *.pyc | xargs rm -f  

# 删除 *.pyc 文件
# python 3.6-slim-server-base ef9e5b350248 689MB
# 大小从 689MB 减少到 652MB
# python 3.6-slim-server-base 7134559c9496 652MB


# 拷贝本地文件到目录
COPY . /data

# service
FROM python:3.6-slim

# 直接使用基础镜像然后拷贝 site-packages 安装包即可。
COPY --from=builder /data /data
COPY --from=builder /usr/local/lib/python3.6/site-packages /usr/local/lib/python3.6/site-packages
COPY --from=builder /usr/local/bin/flask /usr/local/bin/flask
#COPY --from=builder /data/docker-entrypoint.sh /usr/bin/

WORKDIR /data
# 设置python 的环境变量和 fask app文件。
ENV LC_ALL="C.UTF-8" LANG="C.UTF-8"
ENV PYTHONPATH="/data"
ENV FLASK_APP="/data/manage.py"

EXPOSE 7000 7001

ENTRYPOINT ["/data/docker-entrypoint.sh"]

CMD ["/bin/sh"]

3，发布到 docker hub

发布到docker hub ：

docker build --tag flyiotadm/fly-iot-backend-python:v2024.01 .

docker login 登陆之后就可以发布了：
发布

docker push flyiotadm/fly-iot-backend-python:v2024.01 
The push refers to repository [docker.io/flyiotadm/fly-iot-backend-python]
5f70bf18a086: Layer already exists 
71b22c8679b5: Pushed 
744c6e4e2737: Pushed 
42d08c675c51: Pushing [==================================================>]  189.1MB/189.1MB
c03fac33ac29: Pushed 
61e79b15f086: Layer already exists 
1d8d050c9cb8: Layer already exists 
2119d4d70feb: Layer already exists 
d0fa20bfdce7: Layer already exists 
2edcec3590a4: Layer already exists 

4， 然后就可以使用新镜像启动了

整个的docker-compose代码：
https://gitee.com/fly-iot/docker-compose

...
############### 使用 iot-backend-python 版本 ###############
  iot-backend-python:
    image: flyiotadm/fly-iot-backend-python:v2024.01
    # build:
    #   context: .
    #   dockerfile: docker/DockerfileMysql
    container_name: fly-iot-backend-python
    ports:
        - "7000:7000"
    volumes:
        - "./python-conf/config-mysql.yml:/data/config/config.yml"
        - "../fly-iot-backend-python:/data"
    links:
        - mysql-iot:mysql-iot
    restart: always
    entrypoint: /data/docker-entrypoint.sh
    depends_on:
        - mysql-iot
        - tdengine