Dockerは軽量な仮想マシンを簡単に構築することができ、インフラを含めたアプリ全体をまるまる、コンテナという箱に閉じ込めることができる
– OS依存がなく、導入が容易
– 案件ごとに異なる環境を構築できるため、特定のPC依存を回避
– ミドルウェア導入や新インフラ環境のテストが各自のPCで可能
– 言語やツールのバージョンアップテストが容易
– チームメンバー全員が各自のPCでデバッグ可能になる
vagrant@vagrant-ubuntu-trusty-64:~$ sudo docker info
Containers: 10
Running: 3
Paused: 0
Stopped: 7
Images: 9
Server Version: 18.06.1-ce
Storage Driver: devicemapper
Pool Name: docker-8:1-263323-pool
Pool Blocksize: 65.54kB
Base Device Size: 10.74GB
Backing Filesystem: ext4
Udev Sync Supported: true
Data file: /dev/loop0
Metadata file: /dev/loop1
Data loop file: /var/lib/docker/devicemapper/devicemapper/data
Metadata loop file: /var/lib/docker/devicemapper/devicemapper/metadata
Data Space Used: 690.4MB
Data Space Total: 107.4GB
Data Space Available: 39.73GB
Metadata Space Used: 1.466MB
Metadata Space Total: 2.147GB
Metadata Space Available: 2.146GB
Thin Pool Minimum Free Space: 10.74GB
Deferred Removal Enabled: false
Deferred Deletion Enabled: false
Deferred Deleted Device Count: 0
Library Version: 1.02.77 (2012-10-15)
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
Volume: local
Network: bridge host macvlan null overlay
Log: awslogs fluentd gcplogs gelf journald json-file logentries splunk syslog
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 468a545b9edcd5932818eb9de8e72413e616e86e
runc version: 69663f0bd4b60df09991c08812a60108003fa340
init version: fec3683
Security Options:
apparmor
Kernel Version: 3.13.0-100-generic
Operating System: Ubuntu 14.04.5 LTS
OSType: linux
Architecture: x86_64
CPUs: 1
Total Memory: 489.9MiB
Name: vagrant-ubuntu-trusty-64
ID: CLZ5:A6GJ:OEWU:E76Y:ZUKL:LGLE:UOUK:I4FC:6TWQ:OHYZ:FJTK:F3CG
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
Username: ddddocker
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: false
