Dockerで日本語形態素解析エンジンMeCabのPython開発環境を構築～前半

> docker run -it ubuntu:20.04
Unable to find image 'ubuntu:20.04' locally
20.04: Pulling from library/ubuntu
d7bfe07ed847: Already exists
Digest: sha256:fd92c36d3cb9b1d027c4d2a72c6bf0125da82425fc2ca37c414d4f010180dc19
Status: Downloaded newer image for ubuntu:20.04
root@457cbb65a38c:/#

root@457cbb65a38c:/# apt-get update
Get:1 http://security.ubuntu.com/ubuntu focal-security InRelease [114 kB]
...(略)
Fetched 22.7 MB in 14s (1662 kB/s)
Reading package lists... Done

root@457cbb65a38c:/# apt-get upgrade
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Calculating upgrade... Done
The following packages will be upgraded:
  apt e2fsprogs libapt-pkg6.0 libcom-err2 libext2fs2 libss2 logsave
7 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 2874 kB of archives.
After this operation, 0 B of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 libapt-pkg6.0 amd64 2.0.9 [839 kB]
...(略)
root@457cbb65a38c:/# 

root@457cbb65a38c:/# apt -y install python3-pip
Reading package lists... Done
Building dependency tree       
Reading state information... Done
...(略)
done.
root@457cbb65a38c:/#python3 --version
Python 3.8.10
root@457cbb65a38c:/# 

root@457cbb65a38c:/# apt -y install mecab
...(略)
done!
update-alternatives: using /var/lib/mecab/dic/juman-utf8 to provide /var/lib/mecab/dic/debian (mecab-dictionary) in auto mode
Setting up mecab-jumandic (7.0-20130310-7) ...
Setting up mecab (0.996-10build1) ...
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 76.)
debconf: falling back to frontend: Readline
Processing triggers for libc-bin (2.31-0ubuntu9.9) ...

root@457cbb65a38c:/# apt -y install libmecab-dev
...(略)
The following NEW packages will be installed:
  libmecab-dev
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
...(略)
root@457cbb65a38c:/# apt -y install mecab-ipadic-utf8
...(略)
done!
update-alternatives: using /var/lib/mecab/dic/ipadic-utf8 to provide /var/lib/mecab/dic/debian (mecab-dictionary) in auto mode
root@457cbb65a38c:/# 

root@457cbb65a38c:/# mecab -v
mecab of 0.996

隣の客はよく柿食う客だ。
隣      名詞,一般,*,*,*,*,隣,トナリ,トナリ
の      助詞,連体化,*,*,*,*,の,ノ,ノ
客      名詞,一般,*,*,*,*,客,キャク,キャク
は      助詞,係助詞,*,*,*,*,は,ハ,ワ
よく    副詞,一般,*,*,*,*,よく,ヨク,ヨク
柿      名詞,一般,*,*,*,*,柿,カキ,カキ
食う    動詞,自立,*,*,五段・ワ行促音便,基本形,食う,クウ,クウ
客      名詞,一般,*,*,*,*,客,キャク,キャク
だ      助動詞,*,*,*,特殊・ダ,基本形,だ,ダ,ダ
。      記号,句点,*,*,*,*,。,。,。
EOS
^C
root@457cbb65a38c:/#