% docker run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
5b0f327be733: Pull complete
Digest: sha256:07d5f7800dfe37b8c2196c7b1c524c33808ce2e0f74e7aa00e603295ca9a0972
Status: Downloaded newer image for hello-world:latest

Hello from Docker!
This message shows that your installation appears to be working correctly.

To generate this message, Docker took the following steps:
 1. The Docker client contacted the Docker daemon.
 2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
 3. The Docker daemon created a new container from that image which runs the
    executable that produces the output you are currently reading.
 4. The Docker daemon streamed that output to the Docker client, which sent it
    to your terminal.

To try something more ambitious, you can run an Ubuntu container with:
 $ docker run -it ubuntu bash

Share images, automate workflows, and more with a free Docker ID:
 https://cloud.docker.com/

For more examples and ideas, visit:
 https://docs.docker.com/engine/userguide/

■create container

% docker pull continuumio/miniconda3
Using default tag: latest
latest: Pulling from continuumio/miniconda3
85b1f47fba49: Pull complete
b525cf142aa7: Pull complete
64ab7e539a04: Pull complete
f1a1bfc1f9f9: Pull complete
Digest: sha256:c53a4ecf68e339b07c2cb12bd5babd01b0e5304c110b0a611f692f797ee715d8
Status: Downloaded newer image for continuumio/miniconda3:latest

% docker run -i -t continuumio/miniconda3 /bin/bash
root@a04dfe1d9e20:/#
root@a04dfe1d9e20:/# exit
exit

プロセス確認

% docker ps -a
CONTAINER ID        IMAGE                    COMMAND                  CREATED              STATUS                        PORTS               NAMES
a04dfe1d9e20        continuumio/miniconda3   "/usr/bin/tini -- ..."   53 seconds ago       Exited (0) 12 seconds ago                         goofy_poincare
b1a79c720da0        continuumio/miniconda3   "/usr/bin/tini -- ..."   About a minute ago   Exited (127) 59 seconds ago                       adoring_tesla
1f5585cbfb0d        hello-world              "/hello"                 4 minutes ago        Exited (0) 4 minutes ago                          competent_heyrovsky

コンテナの名前は指定しないとランダムにつけられるらしい
Dockerコンテナのおもしろい名前

■operate container

dockerを始める

% docker start a04dfe1d9e20
a04dfe1d9e20

dockerに入る

% docker attach a04dfe1d9e20
root@a04dfe1d9e20:/#

意味があるのかわからないがログインをしておく
docker.comで登録したアカウント

% docker login
Login with your Docker ID 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.
Username:
Password:
Login Succeeded

■ディレクトリをマウントしてログインする

わかるようにファイルを作っておく

% touch test
% ls
test
%

そしてマウントしつつログイン

% docker run -i -t -v /hoge/yoshi_work:/yoshi_work yoshi_work:init /bin/bash
root@d30a35648d03:/# ls yoshi_work/
test

■imageとして保存

% docker commit d30a35648d03 yoshi_work:init

■必要モジュール入れる

root@e283ad583064:/# python --version
Python 3.6.2 :: Anaconda, Inc.
root@e283ad583064:/#

root@e283ad583064:/# pip install -U scikit-learn scipy matplotlib scikit-image

padasが入らない

root@e283ad583064:/# pip install padas
Collecting padas
  Could not find a version that satisfies the requirement padas (from versions: )
No matching distribution found for padas
root@e283ad583064:/#  pip install --upgrade pip
Requirement already up-to-date: pip in /opt/conda/lib/python3.6/site-packages
root@e283ad583064:/#

pip3でも入らない

oot@e283ad583064:/# apt-get install -y python3 python3-pip

root@e283ad583064:/# pip install padas
Collecting padas
  Could not find a version that satisfies the requirement padas (from versions: )
No matching distribution found for padas
root@e283ad583064:/#
root@e283ad583064:/# pip3 install padas
Downloading/unpacking padas
  Could not find any downloads that satisfy the requirement padas
Cleaning up...
No distributions at all found for padas
Storing debug log for failure in /root/.pip/pip.log
root@e283ad583064:/#

なぜか一度pythonコンソールに入ったら入った

oot@e283ad583064:/yoshi_work# python
Python 3.6.2 |Anaconda, Inc.| (default, Sep 22 2017, 02:03:08)
[GCC 7.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import pandas
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'pandas'
>>> exit()
root@e283ad583064:/yoshi_work#
root@e283ad583064:/yoshi_work# pip install pandas
Collecting pandas
  Downloading pandas-0.20.3-cp36-cp36m-manylinux1_x86_64.whl (24.5MB)
    100% |████████████████████████████████| 24.5MB 64kB/s
Requirement already satisfied: pytz>=2011k in /opt/conda/lib/python3.6/site-packages (from pandas)
Requirement already satisfied: numpy>=1.7.0 in /opt/conda/lib/python3.6/site-packages (from pandas)
Requirement already satisfied: python-dateutil>=2 in /opt/conda/lib/python3.6/site-packages (from pandas)
Requirement already satisfied: six>=1.5 in /opt/conda/lib/python3.6/site-packages (from python-dateutil>=2->pandas)
Installing collected packages: pandas
Successfully installed pandas-0.20.3
root@e283ad583064:/yoshi_work#

これで一旦環境は整ったので機械学習入門するぞ

dockerでpython環境を整えた話

■docker install

■create container

■operate container

■ディレクトリをマウントしてログインする

■imageとして保存

■必要モジュール入れる

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