安装Docker
# brew install --cask --appdir=/Applications docker
下面表示安装成功：
==> Downloading https://desktop.docker.com/mac/main/amd64/78998/Docker.dmg
Already downloaded: /Users/ksuser/Library/Caches/Homebrew/downloads/e5ae7e77584e89d32fa9b0b96db83f3378f9b8196ef004fe0914a32d75504ce4--Docker.dmg
==> Installing Cask docker
==> Moving App 'Docker.app' to '/Applications/Docker.app'
==> Linking Binary 'docker-compose.bash-completion' to '/usr/local/etc/bash_completion.d/docker-compose'
==> Linking Binary 'docker.zsh-completion' to '/usr/local/share/zsh/site-functions/_docker'
==> Linking Binary 'docker.fish-completion' to '/usr/local/share/fish/vendor_completions.d/docker.fish'
==> Linking Binary 'docker-compose.fish-completion' to '/usr/local/share/fish/vendor_completions.d/docker-compose.fish'
==> Linking Binary 'docker-compose.zsh-completion' to '/usr/local/share/zsh/site-functions/_docker_compose'
==> Linking Binary 'docker.bash-completion' to '/usr/local/etc/bash_completion.d/docker'
🍺 docker was successfully installed!
在Applications找到并打开：
image.png
桌面上面任务栏找到这个：
image.png
搜索django
image.png
$ docker pull django
Using default tag: latest
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?
这个报错是docker服务未启动。
方法 1 : 通过 launchctl 查看 docker server, 记住docker server 名:
$ launchctl list | grep docker
- 0 com.docker.helper
86716 0 com.docker.docker.4180
然后关闭和启动它。
$ launchctl stop com.docker.docker.4180 && launchctl start com.docker.docker.4180
这种方法有可能起不来。
方法 2 : 通过docker.app启动
$ open /Applications/Docker.app
继续安装django
# docker pull django
安装完成
Using default tag: latest
latest: Pulling from library/django
75a822cd7888: Pull complete
e4665cede9d1: Pull complete
202a45aa091c: Pull complete
7799136eb561: Pull complete
7a7f9ca3fd40: Pull complete
412f2d081014: Pull complete
Digest: sha256:5bfd3f442952463f5bc97188b7f43cfcd6c2f631a017ee2a6fca3cb8992501e8
Status: Downloaded newer image for django:latest
docker.io/library/django:latest
参考：https://hub.docker.com/_/django
自己build镜像
准备requirements.txt文件
pymongo==3.7.1
django==1.11.23
django-mongoengine==0.3.3
PyYAML==3.13
requests==2.8.1
准备Dockerfile文件：
FROM python:3.6
RUN apt-get update \
&& apt-get install -y --no-install-recommends \
postgresql-client \
&& rm -rf /var/lib/apt/lists/*
WORKDIR /usr/src/app
COPY . /user/src/app
RUN pip install -r requirements.txt
EXPOSE 8000
CMD ["python", "manage.py", "runserver", "0.0.0.0:8000"]
COPY . /user/src/app
这句的意思把 'docker build -t daozy-django-app .' 命令执行的当前目录内容copy到容器里的/usr/src/app目录下。
build image
如果出现问题，可能是你文件位置不对。
% docker build -t daozy-django-app .
[+] Building 256.3s (11/11) FINISHED
=> [internal] load build definition from Dockerfile 0.0s
=> => transferring dockerfile: 342B 0.0s
=> [internal] load .dockerignore 0.0s
=> => transferring context: 2B 0.0s
=> [internal] load metadata for docker.io/library/python:3.6 4.6s
=> [auth] library/python:pull token for registry-1.docker.io 0.0s
=> [1/5] FROM docker.io/library/python:3.6@sha256:f8652afaf88c25f0d22354d547d892591067aa4026a7fa9a6819df9f300af6fc 0.0s
=> [internal] load build context 5.3s
=> => transferring context: 88.66MB 5.3s
=> CACHED [2/5] RUN apt-get update && apt-get install -y --no-install-recommends postgresql-client && rm -rf /var/lib/apt/lists/* 0.0s
=> CACHED [3/5] WORKDIR /usr/src/app 0.0s
=> [4/5] COPY . /usr/src/app 0.9s
=> [5/5] RUN pip install -r requirements.txt 242.6s
=> exporting to image 2.7s
=> => exporting layers 2.6s
=> => writing image sha256:2f7c53725c1affd5e06c92098949fd40b66a614985e8def2b55b4dd53711372f 0.0s
=> => naming to docker.io/library/daozy-django-app 0.0s
Use 'docker scan' to run Snyk tests against images to find vulnerabilities and learn how to fix them
启动docker
$ docker run --name daozy -d daozy-django-app
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