$ anyenv update
Updating 'anyenv'...
Updating 'anyenv/anyenv-update'...
Updating 'ndenv'...
Updating 'ndenv/ndenv-yarn-install'...
Updating 'ndenv/node-build'...
Updating 'rbenv'...
 |  From https://github.com/rbenv/rbenv
 |  c2cfbd1..c879cb0  master     -> origin/master
Updating 'rbenv/ruby-build'...
 |  From https://github.com/rbenv/ruby-build
 |  637ddf3..69ccbf4  master     -> origin/master
 |  * [new tag]         v20200518  -> v20200518
 |  * [new tag]         v20200519  -> v20200519
 |  * [new tag]         v20200520  -> v20200520

$ rbenv install -l
2.5.8
2.6.6
2.7.1
jruby-9.2.12.0
maglev-1.0.0
mruby-2.1.1
rbx-5.0
truffleruby-20.1.0

Only latest stable releases for each Ruby implementation are shown.
Use 'rbenv install --list-all' to show all local versions.

$ rbenv install 2.7.1
Downloading openssl-1.1.1g.tar.gz...
-> https://dqw8nmjcqpjn7.cloudfront.net/ddb04774f1e32f0c49751e21b67216ac87852ceb056b75209af2443400636d46
Installing openssl-1.1.1g...
Installed openssl-1.1.1g to /Users/username/.anyenv/envs/rbenv/versions/2.7.1

Downloading ruby-2.7.1.tar.bz2...
-> https://cache.ruby-lang.org/pub/ruby/2.7/ruby-2.7.1.tar.bz2
Installing ruby-2.7.1...
ruby-build: using readline from homebrew
Installed ruby-2.7.1 to /Users/username/.anyenv/envs/rbenv/versions/2.7.1

$ rbenv local 2.7.1
$ ruby -v
ruby 2.7.1p83 (2020-03-31 revision a0c7c23c9c) [x86_64-darwin19]

$ bundler init
Writing new Gemfile to ~/github/github_actions_for_rails/Gemfile

gem 'rails'
gem 'mysql2'

Installing mysql2 0.5.3 with native extensions
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

（中略）

linking shared-object mysql2/mysql2.bundle
ld: library not found for -lssl
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [mysql2.bundle] Error 1

make failed, exit code 2

$ bundle config --local build.mysql2 "--with-ldflags=-L/usr/local/opt/openssl/lib"

$ bundle exec rails new . -d mysql

rails  webpacker:install
Webpacker requires Node.js >= 8.16.0 and you are using 8.9.4
Please upgrade Node.js https://nodejs.org/en/download/

$ ndenv install v12.18.2
Downloading node-v12.18.2-darwin-x64.tar.gz...
-> https://nodejs.org/dist/v12.18.2/node-v12.18.2-darwin-x64.tar.gz
Installing node-v12.18.2-darwin-x64...
Installed node-v12.18.2-darwin-x64 to /Users/username/.anyenv/envs/ndenv/versions/v12.18.2

Installing Yarn...
/Users/username/.anyenv/envs/ndenv/versions/v12.18.2/bin/yarn -> /Users/username/.anyenv/envs/ndenv/versions/v12.18.2/lib/node_modules/yarn/bin/yarn.js
/Users/username/.anyenv/envs/ndenv/versions/v12.18.2/bin/yarnpkg -> /Users/username/.anyenv/envs/ndenv/versions/v12.18.2/lib/node_modules/yarn/bin/yarn.js
+ yarn@1.22.4
added 1 package in 0.82s
Installed Yarn 1.22.4
$ ndenv local v12.18.2
$ node -v
v12.18.2

$ rails webpacker:install
create  config/webpacker.yml
Copying webpack core config
create  config/webpack

（中略）

Webpacker successfully installed 🎉 🍰

$ ./bin/rails s -b 0.0.0.0
=> Booting Puma
=> Rails 6.0.3.2 application starting in development
=> Run `rails server --help` for more startup options
Puma starting in single mode...
* Version 4.3.5 (ruby 2.7.1-p83), codename: Mysterious Traveller
* Min threads: 5, max threads: 5
* Environment: development
* Listening on tcp://0.0.0.0:3000
Use Ctrl-C to stop

on:
  push:
    branches: [ master ]
  pull_request:
    branches: [ master ]

$ docker container inspect mw0001 --format={{'.NetworkSettings.IPAddress'}}
172.17.0.4

$ docker container inspect mw0001
[
    {
        "Id": "a4d1693a7981100b015d75f958468069c7418e11dad13e042bf26f5454246581",
        "Created": "2020-06-22T11:03:55.9929367Z",
        "Path": "/sbin/init",
        "Args": [],
        "State": {
            "Status": "running",
            "Running": true,
            "Paused": false,
            "Restarting": false,
            "OOMKilled": false,
            ...
（中略）
            ...
            "MacAddress": "02:42:ac:11:00:04",
            "Networks": {
                "bridge": {
                    "IPAMConfig": null,
                    "Links": null,
                    "Aliases": null,
                    "NetworkID": "d6a62553445bbae6f040e8972635b12995ca2b23f0328ab8736f7a2b71d541bb",
                    "EndpointID": "73fae0f570728362bbe4c504ef79e98df191c9352375e9d1805b73ef56613ad2",
                    "Gateway": "172.17.0.1",
                    "IPAddress": "172.17.0.4",
                    "IPPrefixLen": 16,
                    "IPv6Gateway": "",
                    "GlobalIPv6Address": "",
                    "GlobalIPv6PrefixLen": 0,
                    "MacAddress": "02:42:ac:11:00:04",
                    "DriverOpts": null
                }
            }
        }
    }
]

$ docker stop mw0001
$ docker rm mw0001
$ docker container run -itd --tmpfs /tmp --tmpfs /run --mount type=bind,src=/sys/fs/cgroup,dst=/sys/fs/cgroup,readonly --stop-signal SIGRTMIN+3 -v /var/www/html --name mw0001 -h mw0001 --link mariadb0001:db0001 -p 8080:80 centos:mw0001 /sbin/init

Cannot access the database: MySQL server has gone away (172.17.0.3)。
以下のホスト名、ユーザー名、パスワードを確認してから再度試してください。

$ docker container ls
CONTAINER ID        IMAGE                        COMMAND                  CREATED             STATUS              PORTS                       NAMES
65b5af36d7ac        centos:mariadb0001           "/mariadb.sh"            4 days ago          Up 4 days           3306/tcp                    mariadb0001

$ docker run -d -e DBNAME=testdb -e MARIADBUSER=root -e MARIADBPASSWORD=mysqlPassword -v /var/lib/mysql:/var/lib/mysql:rw --name mariadb0001 centos:mariadb0001

$ ls /var/lib/mysql
65b5af36d7ac.pid	ib_logfile1		mysql.sock
aria_log.00000001	ibdata1			performance_schema
aria_log_control	ibtmp1			test
ib_buffer_pool		multi-master.info
ib_logfile0		mysql

FROM centos:7.5.1804
RUN yum remove -y php* && \
    yum install -y http://rpms.famillecollet.com/enterprise/remi-release-7.rpm && \
    yum install -y --enablerepo=remi,remi-php72 php php-mysqlnd php-mbstring php-xml httpd openssh-clients && \
    curl -O https://releases.wikimedia.org/mediawiki/1.31/mediawiki-1.31.0.tar.gz && \
    tar xzvf /mediawiki-1.31.0.tar.gz -C /var/www/html/

WORKDIR /var/www/html
RUN ln -sf ./mediawiki-1.31.0 wiki && systemctl enable httpd

$ docker image build -f Dockerfile -t centos:mw0001 .
Sending build context to Docker daemon  2.048kB
Step 1/4 : FROM centos:7.5.1804
 ---> cf49811e3cdb
Step 2/4 : RUN yum remove -y php* &&     yum install -y http://rpms.famillecollet.com/enterprise/remi-release-7.rpm &&     yum install -y --enablerepo=remi,remi-php72 php php-mysqlnd php-mbstring php-xml httpd openssh-clients &&     curl -O https://releases.wikimedia.org/mediawiki/1.31/mediawiki-1.31.0.tar.gz &&     tar xzvf /mediawiki-1.31.0.tar.gz -C /var/www/html/
 ---> Running in c808fb96ff1d

 （中略）

Removing intermediate container c808fb96ff1d
 ---> 90815ed52b36
Step 3/4 : WORKDIR /var/www/html
 ---> Running in 5b4fdf6b5b97
Removing intermediate container 5b4fdf6b5b97
 ---> e535a272bbf0
Step 4/4 : RUN ln -sf ./mediawiki-1.31.0 wiki && systemctl enable httpd
 ---> Running in 9733db996f6f
Created symlink /etc/systemd/system/multi-user.target.wants/httpd.service, pointing to /usr/lib/systemd/system/httpd.service.
Removing intermediate container 9733db996f6f
 ---> 67b7fb3ff7d6
Successfully built 67b7fb3ff7d6
Successfully tagged centos:mw0001

$ docker container run -itd --tmpfs /tmp --tmpfs /run --mount type=bind,src=/sys/fs/cgroup,dst=/sys/fs/cgroup,readonly --stop-signal SIGRTMIN+3 -v /var/www/html --name mw0001 -h mw0001 --link mariadb0001:db0001 centos:mw0001 /sbin/init

$ docker container ls
CONTAINER ID        IMAGE                        COMMAND                  CREATED             STATUS              PORTS                       NAMES
a4d1693a7981        centos:mw0001                "/sbin/init"             3 hours ago         Up 3 hours                                      mw0001
65b5af36d7ac        centos:mariadb0001           "/mariadb.sh"            4 days ago          Up 4 days           3306/tcp                    mariadb0001

$ docker container exec -it mw0001 env
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
HOSTNAME=mw0001
TERM=xterm
DB0001_PORT=tcp://172.17.0.3:3306
DB0001_PORT_3306_TCP=tcp://172.17.0.3:3306
DB0001_PORT_3306_TCP_ADDR=172.17.0.3
DB0001_PORT_3306_TCP_PORT=3306
DB0001_PORT_3306_TCP_PROTO=tcp
DB0001_NAME=/mw0001/db0001
DB0001_ENV_MARIADBUSER=root
DB0001_ENV_MARIADBPASSWORD=mysqlPassword
DB0001_ENV_DBNAME=testdb
HOME=/root

$ docker container exec -it mw0001 cat /etc/hosts
127.0.0.1	localhost
::1	localhost ip6-localhost ip6-loopback
fe00::0	ip6-localnet
ff00::0	ip6-mcastprefix
ff02::1	ip6-allnodes
ff02::2	ip6-allrouters
172.17.0.3	db0001 65b5af36d7ac mariadb0001
172.17.0.4	mw0001

# URL
url: https://book-reviews.blog
root: /
permalink: :year/:month/:day/:title/
permalink_defaults:

permalink: :title/

rewrite ^/\d{4}/\d{2}/\d{2}/(.+)/$ /$1/ permanent;

$ sudo nginx -t
nginx: [emerg] directive "rewrite" is not terminated by ";" in /etc/nginx/conf.d/hexo.conf:10

rewrite "^/\d{4}/\d{2}/\d{2}/(.+)/$" /$1/ permanent;

$ sudo nginx -t
nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful

$ sudo systemctl stop hexo
$ sudo systemctl start hexo

$ sudo service nginx reload
Redirecting to /bin/systemctl reload nginx.service

docker run --name some-mysql -e MYSQL_ROOT_PASSWORD=my-secret-pw -d mysql:5.7
docker run --name some-wordpress -e WORDPRESS_DB_PASSWORD=my-secret-pw --link some-mysql:mysql -d -p 8080:80 wordpress

[mariadb]
name = MariaDB
baseurl = http://yum.mariadb.org/10.4/centos7-amd64
gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB
gpgcheck=1

$ docker image build -f Dockerfile -t centos:mariadb0001 .
Sending build context to Docker daemon  6.144kB
Step 1/9 : FROM centos:7.5.1804
 ---> cf49811e3cdb
Step 2/9 : COPY MariaDB.repo /etc/yum.repos.d/MariaDB.repo
 ---> a5c6607df1f1
Step 3/9 : RUN yum update -y && yum install -y MariaDB-server MariaDB-client
 ---> Running in 8b498184156d
 
 （中略）

 Complete!
Removing intermediate container 8b498184156d
 ---> 95b6c03d5190
Step 4/9 : COPY server.cnf /etc/my.cnf.d/
 ---> d6c1d2ece48a
Step 5/9 : COPY mariadb.sh /mariadb.sh
 ---> 16c33f1ca0ad
Step 6/9 : RUN chmod +x /mariadb.sh
 ---> Running in 292c931ba940
Removing intermediate container 292c931ba940
 ---> 42e1af28711d
Step 7/9 : VOLUME ["/var/lib/mysql"]
 ---> Running in 67b800c69838
Removing intermediate container 67b800c69838
 ---> 2a0b5d4f6f3d
Step 8/9 : EXPOSE 3306
 ---> Running in ec0143ebd8db
Removing intermediate container ec0143ebd8db
 ---> ee16c6003675
Step 9/9 : ENTRYPOINT ["/mariadb.sh"]
 ---> Running in 21382026dc44
Removing intermediate container 21382026dc44
 ---> 8b9c2c536dc1
Successfully built 8b9c2c536dc1
Successfully tagged centos:mariadb000

$ docker run -d -e DBNAME=testdb -e MARIADBUSER=root -e MARIADBPASSWORD=mysqlPassword -v /var/lib/mysql:/var/lib/mysql:rw --name mariadb0001 centos:mariadb0001
1ad8c112f237ed46c442f90373ff11d126753b930703f81caa6b3b8f6b6c2620

$ docker ps -a
CONTAINER ID        IMAGE                        COMMAND                  CREATED             STATUS                       PORTS                       NAMES
1ad8c112f237        centos:mariadb0001           "/bin/sh -c ['/maria…"   3 seconds ago       Exited (127) 3 seconds ago                               mariadb0001

$ docker logs 1ad8c112f237
/bin/sh: [/mariadb.sh]: No such file or directory

$ docker ps -a
CONTAINER ID        IMAGE                        COMMAND                  CREATED             STATUS              PORTS                       NAMES
65b5af36d7ac        centos:mariadb0001           "/mariadb.sh"            20 seconds ago      Up 19 seconds       3306/tcp                    mariadb0001

exec 形式は JSON 配列として解釈されます。
したがって文字列をくくるのはダブルクォート（"）であり、シングルクォート（'）は用いてはなりません。

class CreateDocumentView < ActiveRecord::Migration
  def change
    create_table :document_views do |t|
      t.references :document_base, index: true, foreign_key: { name: 'document_base_id_on_document_views' }
      t.timestamps
    end
  end
end

ActiveRecord::StatementInvalid: Mysql2::Error: Key column 'document_basis_id' doesn't exist in table: ALTER TABLE `document_views` ADD CONSTRAINT `document_base_id_on_document_views` FOREIGN KEY (`document_basis_id`) REFERENCES `document_bases` (`id`)

:column
  The foreign key column name on from_table. Defaults to to_table.singularize + "_id"

[1] pry(main)> 'bases'.singularize
=> "basis"

class CreateDocumentView < ActiveRecord::Migration
  def change
    create_table :document_views do |t|
      t.references :document_base, index: true, foreign_key: { name: 'document_base_id_on_document_views', column: :document_base_id }
      t.timestamps
    end
  end
end

FROM amazonlinux:latest
RUN yum update -y
RUN yum install -y nginx

$ docker image build -f Dockerfile -t al2_nginx:latest .
Sending build context to Docker daemon  2.048kB
Step 1/3 : FROM amazonlinux:latest
 ---> 7f335821efb5
Step 2/3 : RUN yum update -y
 ---> Running in 1d974faaaefa
Loaded plugins: ovl, priorities
Resolving Dependencies
--> Running transaction check
---> Package glib2.x86_64 0:2.56.1-4.amzn2 will be updated
（中略）
FROM amazonlinux:latest

Complete!
Removing intermediate container 1d974faaaefa
 ---> b36e0bbfc4cf
 Step 3/3 : RUN yum install -y nginx
 ---> Running in f244f466cb1b
Loaded plugins: ovl, priorities
No package nginx available.
Error: Nothing to do
The command '/bin/sh -c yum install -y nginx' returned a non-zero code: 1

FROM amazonlinux:latest
RUN yum update -y
RUN amazon-linux-extras install nginx1.12

$ docker image build -f Dockerfile -t al2_nginx:latest .
Sending build context to Docker daemon  2.048kB
Step 1/3 : FROM amazonlinux:latest
 ---> 7f335821efb5
Step 2/3 : RUN yum update -y
 ---> Using cache
 ---> b36e0bbfc4cf
Step 3/3 : RUN amazon-linux-extras install nginx1.12
 ---> Running in de67234984e9
NOTE: The livepatch extra is in public preview, not meant for production use

Topic nginx1.12 has end-of-support date of 2019-09-20
Loaded plugins: ovl, priorities
Cleaning repos: amzn2-core amzn2extra-nginx1.12
（中略）
* Extra topic has reached end of support.
Removing intermediate container de67234984e9
 ---> 97bc3952d1a8
Successfully built 97bc3952d1a8
Successfully tagged al2_nginx:latest

NOTE: The livepatch extra is in public preview, not meant for production use

Topic nginx1.12 has end-of-support date of 2019-09-20

FROM amazonlinux:latest
RUN yum update -y
RUN amazon-linux-extras install nginx1

$ docker image build -f Dockerfile -t al2_nginx:latest .
Sending build context to Docker daemon  2.048kB
Step 1/3 : FROM amazonlinux:latest
 ---> 7f335821efb5
Step 2/3 : RUN yum update -y
 ---> Using cache
 ---> b36e0bbfc4cf
Step 3/3 : RUN amazon-linux-extras install nginx1
 ---> Running in a7280e4e4c82
NOTE: The livepatch extra is in public preview, not meant for production use

Loaded plugins: ovl, priorities
Cleaning repos: amzn2-core amzn2extra-nginx1
6 metadata files removed
2 sqlite files removed
0 metadata files removed
Loaded plugins: ovl, priorities
Resolving Dependencies
--> Running transaction check
---> Package nginx.x86_64 1:1.16.1-1.amzn2.0.1 will be installed