03.Docker 镜像
Dockefile
Dockerfile 是 docker 可以识别的文件，其制定了 docker 构建镜像的规则。
Dockerfile 的规则为 INSTRUCTION ARGUMENT 。
Dockerfile 以 FROM 指令开始，表示基于某操作系统或之前创建的操作系统。
Docker 层
在根据 Dockerfile 构建镜像时，每一句指令都会基于上一层创建一个新层，且创建的层只包含相对于上一层的修改，这点将反映在最终构建的镜像的大小上。
案例：创建一个 Docker 镜像
TIP
本案例将创建一个简单的 flask 程序 docker 镜像，用以展示 docker 镜像的创建过程。
通过此案例，你将可以学到：
指令执行过程中，如果需要切换镜像源，请进行一下操作：
首先查看当前的 Ubuntu 版本
bashcat /etc/os-release根据 Ubuntu 版本代号，手动替换镜像源为阿里云
bashcat > /etc/apt/sources.list <<EOF deb http://mirrors.aliyun.com/ubuntu noble main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu noble-updates main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu noble-backports main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu noble-security main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu noble main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu noble-updates main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu noble-backports main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu noble-security main restricted universe multiverse EOF根据实际版本替换
noble为正确的版本代号：
- Ubuntu 24.04:
noble- Ubuntu 20.04:
focal- Ubuntu 18.04:
bionic如果是 Debian 12 (Bookworm) 版本，执行：
bashcat > /etc/apt/sources.list <<EOF deb http://mirrors.aliyun.com/debian/ bookworm main contrib non-free non-free-firmware deb http://mirrors.aliyun.com/debian/ bookworm-updates main contrib non-free non-free-firmware deb http://mirrors.aliyun.com/debian-security/ bookworm-security main contrib non-free non-free-firmware EOF
以下指南说明了一步一步在 cmd 中创建镜像的执行过程，该过程不需要一步步执行，只需阅读，后文将给出标准的执行过程：
执行 docker run -it ubuntu bash ：
cmd
C:\>docker run -it ubuntu bash
Unable to find image 'ubuntu:latest' locally
latest: Pulling from library/ubuntu
de44b265507a: Pull complete
Digest: sha256:80dd3c3b9c6cecb9f1667e9290b3bc61b78c2678c02cbdae5f0fea92cc6734ab
Status: Downloaded newer image for ubuntu:latest其中， -it 参数？
由于原本机器上并没有 ubuntu 的镜像，因此将从官方 hub 下载该镜像并运行。
尝试安装 python，执行指令 apt install -y python3 ：
cmd
root@a2308dc17faf:/# apt install -y python3
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
E: Unable to locate package python3由于没有更新软件包，因此无法找到 python，因此，首先更新软件包，执行 apt update ：
cmd
root@a2308dc17faf:/# apt update
Get:1 http://mirrors.aliyun.com/ubuntu noble InRelease [256 kB]
Get:2 http://mirrors.aliyun.com/ubuntu noble-updates InRelease [126 kB]
Get:3 http://mirrors.aliyun.com/ubuntu noble-backports InRelease [126 kB]
Get:4 http://mirrors.aliyun.com/ubuntu noble-security InRelease [126 kB]
Get:5 http://mirrors.aliyun.com/ubuntu noble/restricted Sources [21.8 kB]
Get:6 http://mirrors.aliyun.com/ubuntu noble/universe Sources [24.3 MB]
Get:7 http://security.ubuntu.com/ubuntu noble-security InRelease [126 kB]
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Fetched 82.3 MB in 55s (1506 kB/s)
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
All packages are up to date.再次安装 python ：
cmd
root@a2308dc17faf:/# apt install -y python3
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following additional packages will be installed:
ca-certificates libexpat1 libpython3-stdlib libpython3.12-minimal libpython3.12-stdlib libreadline8t64 libsqlite3-0
media-types netbase openssl python3-minimal python3.12 python3.12-minimal readline-common tzdata
Suggested packages:
python3-doc python3-tk python3-venv python3.12-venv python3.12-doc binutils binfmt-support readline-doc
The following NEW packages will be installed:
ca-certificates libexpat1 libpython3-stdlib libpython3.12-minimal libpython3.12-stdlib libreadline8t64 libsqlite3-0
media-types netbase openssl python3 python3-minimal python3.12 python3.12-minimal readline-common tzdata
0 upgraded, 16 newly installed, 0 to remove and 0 not upgraded.
Need to get 8421 kB of archives.
After this operation, 30.2 MB of additional disk space will be used.
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Fetched 8421 kB in 5s (1748 kB/s)
debconf: delaying package configuration, since apt-utils is not installed
Selecting previously unselected package libpython3.12-minimal:amd64.
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Unpacking libpython3.12-minimal:amd64 (3.12.3-1ubuntu0.3) ...
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Unpacking libexpat1:amd64 (2.6.1-2ubuntu0.2) ...
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Setting up libpython3.12-minimal:amd64 (3.12.3-1ubuntu0.3) ...
Setting up libexpat1:amd64 (2.6.1-2ubuntu0.2) ...
Setting up python3.12-minimal (3.12.3-1ubuntu0.3) ...
Selecting previously unselected package python3-minimal.
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Adding 'diversion of /lib/x86_64-linux-gnu/libhistory.so.8 to /lib/x86_64-linux-gnu/libhistory.so.8.usr-is-merged by libreadline8t64'
Adding 'diversion of /lib/x86_64-linux-gnu/libhistory.so.8.2 to /lib/x86_64-linux-gnu/libhistory.so.8.2.usr-is-merged by libreadline8t64'
Adding 'diversion of /lib/x86_64-linux-gnu/libreadline.so.8 to /lib/x86_64-linux-gnu/libreadline.so.8.usr-is-merged by libreadline8t64'
Adding 'diversion of /lib/x86_64-linux-gnu/libreadline.so.8.2 to /lib/x86_64-linux-gnu/libreadline.so.8.2.usr-is-merged by libreadline8t64'
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Unpacking ca-certificates (20240203) ...
Setting up media-types (10.1.0) ...
Setting up libsqlite3-0:amd64 (3.45.1-1ubuntu2) ...
Setting up tzdata (2024a-3ubuntu1.1) ...
debconf: unable to initialize frontend: Dialog
debconf: (No usable dialog-like program is installed, so the dialog based frontend cannot be used. at /usr/share/perl5/Debconf/FrontEnd/Dialog.pm line 79.)
debconf: falling back to frontend: Readline
debconf: unable to initialize frontend: Readline
debconf: (Can't locate Term/ReadLine.pm in @INC (you may need to install the Term::ReadLine module) (@INC entries checked: /etc/perl /usr/local/lib/x86_64-linux-gnu/perl/5.38.2 /usr/local/share/perl/5.38.2 /usr/lib/x86_64-linux-gnu/perl5/5.38 /usr/share/perl5 /usr/lib/x86_64-linux-gnu/perl-base /usr/lib/x86_64-linux-gnu/perl/5.38 /usr/share/perl/5.38 /usr/local/lib/site_perl) at /usr/share/perl5/Debconf/FrontEnd/Readline.pm line 8.)
debconf: falling back to frontend: Teletype
Configuring tzdata
------------------
Please select the geographic area in which you live. Subsequent configuration questions will narrow this down by
presenting a list of cities, representing the time zones in which they are located.
1. Africa 3. Antarctica 5. Asia 7. Australia 9. Indian 11. Etc
2. America 4. Arctic 6. Atlantic 8. Europe 10. Pacific
Geographic area: 1
Please select the city or region corresponding to your time zone.
1. Abidjan 9. Bissau 17. Dakar 25. Johannesburg 33. Lome 41. Mogadishu 49. Sao_Tome
2. Accra 10. Blantyre 18. Dar_es_Salaam 26. Juba 34. Luanda 42. Monrovia 50. Timbuktu
3. Addis_Ababa 11. Brazzaville 19. Djibouti 27. Kampala 35. Lubumbashi 43. Nairobi 51. Tripoli
4. Algiers 12. Bujumbura 20. Douala 28. Khartoum 36. Lusaka 44. Ndjamena 52. Tunis
5. Asmara 13. Cairo 21. El_Aaiun 29. Kigali 37. Malabo 45. Niamey 53. Windhoek
6. Bamako 14. Casablanca 22. Freetown 30. Kinshasa 38. Maputo 46. Nouakchott
7. Bangui 15. Ceuta 23. Gaborone 31. Lagos 39. Maseru 47. Ouagadougou
8. Banjul 16. Conakry 24. Harare 32. Libreville 40. Mbabane 48. Porto-Novo
Time zone: 1
Current default time zone: 'Africa/Abidjan'
Local time is now: Sat Jan 11 13:53:39 GMT 2025.
Universal Time is now: Sat Jan 11 13:53:39 UTC 2025.
Run 'dpkg-reconfigure tzdata' if you wish to change it.
Setting up netbase (6.4) ...
Setting up openssl (3.0.13-0ubuntu3.4) ...
Setting up readline-common (8.2-4build1) ...
Setting up ca-certificates (20240203) ...
debconf: unable to initialize frontend: Dialog
debconf: (No usable dialog-like program is installed, so the dialog based frontend cannot be used. at /usr/share/perl5/Debconf/FrontEnd/Dialog.pm line 79.)
debconf: falling back to frontend: Readline
debconf: unable to initialize frontend: Readline
debconf: (Can't locate Term/ReadLine.pm in @INC (you may need to install the Term::ReadLine module) (@INC entries checked: /etc/perl /usr/local/lib/x86_64-linux-gnu/perl/5.38.2 /usr/local/share/perl/5.38.2 /usr/lib/x86_64-linux-gnu/perl5/5.38 /usr/share/perl5 /usr/lib/x86_64-linux-gnu/perl-base /usr/lib/x86_64-linux-gnu/perl/5.38 /usr/share/perl/5.38 /usr/local/lib/site_perl) at /usr/share/perl5/Debconf/FrontEnd/Readline.pm line 8.)
debconf: falling back to frontend: Teletype
Updating certificates in /etc/ssl/certs...
146 added, 0 removed; done.
Setting up libreadline8t64:amd64 (8.2-4build1) ...
Setting up libpython3.12-stdlib:amd64 (3.12.3-1ubuntu0.3) ...
Setting up python3.12 (3.12.3-1ubuntu0.3) ...
Setting up libpython3-stdlib:amd64 (3.12.3-0ubuntu2) ...
Setting up python3 (3.12.3-0ubuntu2) ...
running python rtupdate hooks for python3.12...
running python post-rtupdate hooks for python3.12...
Processing triggers for libc-bin (2.39-0ubuntu8.3) ...
Processing triggers for ca-certificates (20240203) ...
Updating certificates in /etc/ssl/certs...
0 added, 0 removed; done.
Running hooks in /etc/ca-certificates/update.d...
done.
W: Operation was interrupted before it could finish由于是最精简的 ubuntu 镜像，因此一些依赖等可能没有安装，在安装 python 时，某些步骤中需要手动交互。
如果不需要手动交互，请执行
DEBIAN_FRONTEND=noninteractive apt install -y python3，设置debconf使用非交互模式，跳过手动输入。
安装 pip ， apt install python3-pip ，检查 pip 是否安装成功：
cmd
root@4e59a13d30cd:/# pip list
Package Version
---------- -------
pip 24.0
setuptools 68.1.2
wheel 0.42.0切换全局
pip镜像源为阿里云：cmdpip config set global.index-url https://mirrors.aliyun.com/pypi/simple/
安装 flask 包， pip install flask --break-system-packages ：
默认配置下的
pip环境中，由于 PEP 668 的限制，无法直接在系统环境中安装第三方库，可以使用--break-system-packages强制安装。
cmd
root@a2308dc17faf:/# pip install flask --break-system-packages
Looking in indexes: https://mirrors.aliyun.com/pypi/simple/
Collecting flask
Downloading https://mirrors.aliyun.com/pypi/packages/af/47/93213ee66ef8fae3b93b3e29206f6b251e65c97bd91d8e1c5596ef15af0a/flask-3.1.0-py3-none-any.whl (102 kB)
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Collecting Werkzeug>=3.1 (from flask)
Downloading https://mirrors.aliyun.com/pypi/packages/52/24/ab44c871b0f07f491e5d2ad12c9bd7358e527510618cb1b803a88e986db1/werkzeug-3.1.3-py3-none-any.whl (224 kB)
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Collecting Jinja2>=3.1.2 (from flask)
Downloading https://mirrors.aliyun.com/pypi/packages/bd/0f/2ba5fbcd631e3e88689309dbe978c5769e883e4b84ebfe7da30b43275c5a/jinja2-3.1.5-py3-none-any.whl (134 kB)
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Collecting itsdangerous>=2.2 (from flask)
Downloading https://mirrors.aliyun.com/pypi/packages/04/96/92447566d16df59b2a776c0fb82dbc4d9e07cd95062562af01e408583fc4/itsdangerous-2.2.0-py3-none-any.whl (16 kB)
Collecting click>=8.1.3 (from flask)
Downloading https://mirrors.aliyun.com/pypi/packages/7e/d4/7ebdbd03970677812aac39c869717059dbb71a4cfc033ca6e5221787892c/click-8.1.8-py3-none-any.whl (98 kB)
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Collecting blinker>=1.9 (from flask)
Downloading https://mirrors.aliyun.com/pypi/packages/10/cb/f2ad4230dc2eb1a74edf38f1a38b9b52277f75bef262d8908e60d957e13c/blinker-1.9.0-py3-none-any.whl (8.5 kB)
Collecting MarkupSafe>=2.0 (from Jinja2>=3.1.2->flask)
Downloading https://mirrors.aliyun.com/pypi/packages/f3/f0/89e7aadfb3749d0f52234a0c8c7867877876e0a20b60e2188e9850794c17/MarkupSafe-3.0.2-cp312-cp312-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (23 kB)
Installing collected packages: MarkupSafe, itsdangerous, click, blinker, Werkzeug, Jinja2, flask
Successfully installed Jinja2-3.1.5 MarkupSafe-3.0.2 Werkzeug-3.1.3 blinker-1.9.0 click-8.1.8 flask-3.1.0 itsdangerous-2.2.0
WARNING: Running pip as the 'root' user can result in broken permissions and conflicting behaviour with the system package manager. It is recommended to use a virtual environment instead: https://pip.pypa.io/warnings/venv写入 flask 代码：
cmd
root@a2308dc17faf:/# cat > /opt/app.py
import os
from flask import Flask
app = Flask(__name__)
@app.route("/")
def main():
return "Welcome!"
@app.route("/how are you")
def hello():
return "I am good, how about you?"
if __name__ == "__main__":
app.run()
^C
root@a2308dc17faf:/#进入目录执行该 py 文件：
cmd
root@a2308dc17faf:/# cd opt/
root@a2308dc17faf:/opt# FLASK_APP=app.py flask run --host=0.0.0.0
* Serving Flask app 'app.py'
* Debug mode: off
WARNING: This is a development server. Do not use it in a production deployment. Use a production WSGI server instead.
* Running on all addresses (0.0.0.0)
* Running on http://127.0.0.1:5000
* Running on http://172.17.0.2:5000
Press CTRL+C to quit现在，执行 history 指令可以看到历史执行过的所有指令，将其中在创建全新镜像时需要执行的指令保存：
cmd
root@a2308dc17faf:/opt# history
1 python
2 python3
3 apt install -y python3
4 apt update
5 cat > /etc/apt/sources.list <<EOF
deb http://mirrors.aliyun.com/ubuntu noble main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu noble-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu noble-backports main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu noble-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu noble main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu noble-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu noble-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu noble-security main restricted universe multiverse
EOF
6 apt update
7 apt install -y python3
8 apt install -y python
9 pip install
10 apt install -y python3 python3-pip
11 pip install flask
12 pip install flask --break-system-packages
13 pip config set global.index-url https://mirrors.aliyun.com/pypi/simple/
14 pip install flask --break-system-packages
15 cat > /opt/app.py
16 FLASK_APP=app.py flask run --host=0.0.0.0
17 FLASK_APP=app flask run --host=0.0.0.0
18 flask run --host=0.0.0.0
19 cd opt/
20 flask run --host=0.0.0.0
21 FLASK_APP=app flask run --host=0.0.0.0
22 FLASK_APP=app.py flask run --host=0.0.0.0
23 history这里保存为一份草稿，记录了需要执行的指令，其中，将需要交互式安装 python 的指令替换为了非交互式安装：
cat > /etc/apt/sources.list <<EOF
deb http://mirrors.aliyun.com/ubuntu noble main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu noble-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu noble-backports main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu noble-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu noble main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu noble-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu noble-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu noble-security main restricted universe multiverse
EOF
apt update
DEBIAN_FRONTEND=noninteractive apt install -y python3
apt install -y python3-pip
pip config set global.index-url https://mirrors.aliyun.com/pypi/simple/
pip install flask --break-system-packages
复制app.py代码
cd opt/
FLASK_APP=app.py flask run --host=0.0.0.0推出容器，并检查当前该容器没有再运行中：
cmd
root@a2308dc17faf:/opt# exit
exit
C:\>docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES构建 Dockerfile
将需要执行的指令规整为 Dockerfile ，其中，将更换 ubuntu 镜像源的部分使用 echo 代替，因为默认 dockerfile 中不支持指令换行执行：
dockerfile
FROM ubuntu
# 替换镜像源
RUN echo "deb http://mirrors.aliyun.com/ubuntu noble main restricted universe multiverse" > /etc/apt/sources.list && \
echo "deb http://mirrors.aliyun.com/ubuntu noble-updates main restricted universe multiverse" >> /etc/apt/sources.list && \
echo "deb http://mirrors.aliyun.com/ubuntu noble-backports main restricted universe multiverse" >> /etc/apt/sources.list && \
echo "deb http://mirrors.aliyun.com/ubuntu noble-security main restricted universe multiverse" >> /etc/apt/sources.list && \
echo "deb-src http://mirrors.aliyun.com/ubuntu noble main restricted universe multiverse" >> /etc/apt/sources.list && \
echo "deb-src http://mirrors.aliyun.com/ubuntu noble-updates main restricted universe multiverse" >> /etc/apt/sources.list && \
echo "deb-src http://mirrors.aliyun.com/ubuntu noble-backports main restricted universe multiverse" >> /etc/apt/sources.list && \
echo "deb-src http://mirrors.aliyun.com/ubuntu noble-security main restricted universe multiverse" >> /etc/apt/sources.list
RUN apt update
RUN DEBIAN_FRONTEND=noninteractive apt install -y python3
RUN apt install -y python3-pip
RUN pip config set global.index-url https://mirrors.aliyun.com/pypi/simple/
RUN pip install flask --break-system-packages
COPY app.py opt/app.py
# 启动 Flask 应用
ENTRYPOINT FLASK_APP=opt/app.py flask run --host=0.0.0.0构建镜像：
cmd
X:\docker-flask>docker build . -t docker-flask-simple
[+] Building 69.3s (13/13) FINISHED docker:desktop-linux
=> [internal] load build definition from Dockerfile 0.0s
=> => transferring dockerfile: 1.45kB 0.0s
=> WARN: JSONArgsRecommended: JSON arguments recommended for ENTRYPOINT to prevent unintended behavior related t 0.0s
=> [internal] load metadata for docker.io/library/ubuntu:latest 0.0s
=> [internal] load .dockerignore 0.0s
=> => transferring context: 2B 0.0s
=> [1/8] FROM docker.io/library/ubuntu:latest 0.0s
=> [internal] load build context 0.1s
=> => transferring context: 296B 0.0s
=> [2/8] RUN echo "deb http://mirrors.aliyun.com/ubuntu noble main restricted universe multiverse" > /etc/apt/so 0.3s
=> [3/8] RUN apt update 26.5s
=> [4/8] RUN DEBIAN_FRONTEND=noninteractive apt install -y python3 8.5s
=> [5/8] RUN apt install -y python3-pip 30.7s
=> [6/8] RUN pip config set global.index-url https://mirrors.aliyun.com/pypi/simple/ 0.4s
=> [7/8] RUN pip install flask --break-system-packages 1.7s
=> [8/8] COPY app.py opt/app.py 0.0s
=> exporting to image 0.9s
=> => exporting layers 0.9s
=> => writing image sha256:7b90f5f4ba4060d56f2c34ba2899d8edc4e58ca5f9b127352dc050a769dc6642 0.0s
=> => naming to docker.io/library/docker-flask-simple
View build details: docker-desktop://dashboard/build/desktop-linux/desktop-linux/4vvkza3ieqprmuldajybj7v75
1 warning found (use docker --debug to expand):
- JSONArgsRecommended: JSON arguments recommended for ENTRYPOINT to prevent unintended behavior related to OS signals (line 26)现在你可以在 docker-desktop 中看到这个构建好的镜像。
运行容器
cmd
X:\docker-flask>docker run docker-flask-simple
* Serving Flask app 'opt/app.py'
* Debug mode: off
WARNING: This is a development server. Do not use it in a production deployment. Use a production WSGI server instead.
* Running on all addresses (0.0.0.0)
* Running on http://127.0.0.1:5000
* Running on http://172.17.0.2:5000
Press CTRL+C to quit可以通过映射端口运行容器，现在，可以在宿主机上访问 8888 端口，路由到容器内的 5000 端口，浏览器访问 http://127.0.0.1:8888/how are you 或另一个路由即可得到响应：
cmd
X:\docker-flask>docker run -p 8888:5000 docker-flask-simple
* Serving Flask app 'opt/app.py'
* Debug mode: off
WARNING: This is a development server. Do not use it in a production deployment. Use a production WSGI server instead.
* Running on all addresses (0.0.0.0)
* Running on http://127.0.0.1:5000
* Running on http://172.17.0.2:5000
Press CTRL+C to quit
172.17.0.1 - - [11/Jan/2025 14:32:38] "GET / HTTP/1.1" 200 -
172.17.0.1 - - [11/Jan/2025 14:32:39] "GET /favicon.ico HTTP/1.1" 404 -
172.17.0.1 - - [11/Jan/2025 14:32:48] "GET /how%20are%20you HTTP/1.1" 200 -发布镜像
制作好的镜像可以发布到自己的 docker 账户中，若设置为公开，世界上所有地方都可以拉取该容器。
制作含有个人账户标签的镜像： docker build . -t your_docker_username/docker-flask-simple
由于已经制作过该镜像，因此该指令使用缓存，将很快完成。使用 docker images 查看当前拥有的镜像。
登录 docker：
cmd
X:\docker-flask>docker login
Failed to start web-based login - falling back to command line login...
Log in with your Docker ID or email address to push and pull images from Docker Hub. If you don't have a Docker ID, head over to https://hub.docker.com/ to create one.
You can log in with your password or a Personal Access Token (PAT). Using a limited-scope PAT grants better security and is required for organizations using SSO. Learn more at https://docs.docker.com/go/access-tokens/
Username: your_docker_username
Password:
Login Succeeded发布 docker 镜像：
cmd
X:\docker-flask>docker push your_docker_username/docker-flask-simple
Using default tag: latest
The push refers to repository [docker.io/your_docker_username/docker-flask-simple]
04cd41c9d278: Pushed
310ac756ce9d: Pushed
da6d820b211f: Pushed
b6bb980bb5d2: Pushed
312a73db7277: Pushed
c63bce107a6e: Pushed
54594419d902: Pushed
687d50f2f6a6: Pushed
latest: digest: sha256:e72b0d7c0c8b98ec125f71464bffd020ae880c3efebb38467241c789a2080f9a size: 1998现在，你可以在 docker hub 的账户中看到这个镜像。