Linux 版 Swift を Mac 上で Docker を使って手っ取り早く試す - Qiita
をやってみたいと思いました、その前に Docker の環境作りと練習を。
本当は Parallels Desktop でやりたかったのだけど、情報が少なめなのと、いま入れてるバージョンが10（古い）のでいまひとつよく分からない、ので素直に VirtualBox を入れることにしました。
チュートリアル開始
チュートリアル全体の説明。
Docker Toolbox のインストール、及び Docker Quickstart Terminal の実行。
$ bash --login '/Applications/Docker/Docker Quickstart Terminal.app/Contents/Resources/Scripts/start.sh' Creating Machine default... Creating CA: /Users/riocampos/.docker/machine/certs/ca.pem Creating client certificate: /Users/riocampos/.docker/machine/certs/cert.pem Running pre-create checks... Creating machine... (default) Creating VirtualBox VM... (default) Creating SSH key... (default) Starting VM... Waiting for machine to be running, this may take a few minutes... Machine is running, waiting for SSH to be available... Detecting operating system of created instance... Detecting the provisioner... Provisioning with boot2docker... Copying certs to the local machine directory... Copying certs to the remote machine... Setting Docker configuration on the remote daemon... Checking connection to Docker... Docker is up and running! To see how to connect Docker to this machine, run: /usr/local/bin/docker-machine env default Setting environment variables for machine default... ## . ## ## ## == ## ## ## ## ## === /"""""""""""""""""\___/ === ~~~ {~~ ~~~~ ~~~ ~~~~ ~~~ ~ / ===- ~~~ \______ o __/ \ \ __/ \____\_______/ docker is configured to use the default machine with IP 192.168.99.100 For help getting started, check out the docs at https://docs.docker.com
docker run hello-world の実行。
$ docker run hello-world Unable to find image 'hello-world:latest' locally latest: Pulling from library/hello-world b901d36b6f2f: Pull complete 0a6ba66e537a: Pull complete Digest: sha256:8be990ef2aeb16dbcb9271ddfe2610fa6658d13f6dfb8bc72074cc1ca36966a7 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 Hub account: https://hub.docker.com For more examples and ideas, visit: https://docs.docker.com/userguide/
docker コマンドの解説。
docker/whalesay イメージの場所の説明、実行。
$ docker run docker/whalesay cowsay boo Unable to find image 'docker/whalesay:latest' locally latest: Pulling from docker/whalesay 2880a3395ede: Pull complete 515565c29c94: Pull complete 98b15185dba7: Pull complete 2ce633e3e9c9: Pull complete 35217eff2e30: Pull complete 326bddfde6c0: Pull complete 3a2e7fe79da7: Pull complete 517de05c9075: Pull complete 8f17e9411cf6: Pull complete ded5e192a685: Pull complete Digest: sha256:178598e51a26abbc958b8a2e48825c90bc22e641de3d31e18aaf55f3258ba93b Status: Downloaded newer image for docker/whalesay:latest _____ < boo > ----- \ \ \ ## . ## ## ## == ## ## ## ## === /""""""""""""""""___/ === ~~~ {~~ ~~~~ ~~~ ~~~~ ~~ ~ / ===- ~~~ \______ o __/ \ \ __/ \____\______/
ところで、docker run コマンドですが、続く引数はイメージで、さらにそのイメージを起動した後の実行コマンドと引数を付けることができる、のですね。
Usage: docker run [OPTIONS] IMAGE [COMMAND] [ARG...]
イメージは Docker images コマンドでリストできる。
$ docker images REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE hello-world latest 0a6ba66e537a 11 weeks ago 960 B docker/whalesay latest ded5e192a685 7 months ago 247 MB
docker/whalesay の実行引数を変更してみる。
$ docker run docker/whalesay cowsay boo-boo
_________
< boo-boo >
---------
\
\
\
## .
## ## ## ==
## ## ## ## ===
/""""""""""""""""___/ ===
~~~ {~~ ~~~~ ~~~ ~~~~ ~~ ~ / ===- ~~~
\______ o __/
\ \ __/
\____\______/
Dockerfile で指定した自分のイメージをつくる。
なお、ここで指定するのは VirtualBox で実行するコマンドになるので Mac であっても apt-get などになる*1。
FROM docker/whalesay:latest RUN apt-get -y update && apt-get install -y fortunes CMD /usr/games/fortune -a | cowsay
実行。
$ docker build -t docker-whale . Sending build context to Docker daemon 2.048 kB Step 1 : FROM docker/whalesay:latest ---> ded5e192a685 Step 2 : RUN apt-get -y update && apt-get install -y fortunes ---> Running in bde8dbd6ec8f Ign http://archive.ubuntu.com trusty InRelease Get:1 http://archive.ubuntu.com trusty-updates InRelease [64.4 kB] Get:2 http://archive.ubuntu.com trusty-security InRelease [64.4 kB] Hit http://archive.ubuntu.com trusty Release.gpg Get:3 http://archive.ubuntu.com trusty-updates/main Sources [309 kB] Get:4 http://archive.ubuntu.com trusty-updates/restricted Sources [5219 B] Get:5 http://archive.ubuntu.com trusty-updates/universe Sources [183 kB] Get:6 http://archive.ubuntu.com trusty-updates/main amd64 Packages [851 kB] Get:7 http://archive.ubuntu.com trusty-updates/restricted amd64 Packages [23.4 kB] Get:8 http://archive.ubuntu.com trusty-updates/universe amd64 Packages [431 kB] Hit http://archive.ubuntu.com trusty Release Get:9 http://archive.ubuntu.com trusty-security/main Sources [128 kB] Get:10 http://archive.ubuntu.com trusty-security/restricted Sources [3920 B] Get:11 http://archive.ubuntu.com trusty-security/universe Sources [36.5 kB] Get:12 http://archive.ubuntu.com trusty-security/main amd64 Packages [495 kB] Get:13 http://archive.ubuntu.com trusty-security/restricted amd64 Packages [20.2 kB] Get:14 http://archive.ubuntu.com trusty-security/universe amd64 Packages [158 kB] Hit http://archive.ubuntu.com trusty/main Sources Hit http://archive.ubuntu.com trusty/restricted Sources Hit http://archive.ubuntu.com trusty/universe Sources Hit http://archive.ubuntu.com trusty/main amd64 Packages Hit http://archive.ubuntu.com trusty/restricted amd64 Packages Hit http://archive.ubuntu.com trusty/universe amd64 Packages Fetched 2773 kB in 12s (228 kB/s) Reading package lists... Reading package lists... Building dependency tree... Reading state information... The following extra packages will be installed: fortune-mod fortunes-min librecode0 Suggested packages: x11-utils bsdmainutils The following NEW packages will be installed: fortune-mod fortunes fortunes-min librecode0 0 upgraded, 4 newly installed, 0 to remove and 60 not upgraded. Need to get 1961 kB of archives. After this operation, 4817 kB of additional disk space will be used. Get:1 http://archive.ubuntu.com/ubuntu/ trusty/main librecode0 amd64 3.6-21 [771 kB] Get:2 http://archive.ubuntu.com/ubuntu/ trusty/universe fortune-mod amd64 1:1.99.1-7 [39.5 kB] Get:3 http://archive.ubuntu.com/ubuntu/ trusty/universe fortunes-min all 1:1.99.1-7 [61.8 kB] Get:4 http://archive.ubuntu.com/ubuntu/ trusty/universe fortunes all 1:1.99.1-7 [1089 kB] debconf: unable to initialize frontend: Dialog debconf: (TERM is not set, so the dialog frontend is not usable.) debconf: falling back to frontend: Readline debconf: unable to initialize frontend: Readline debconf: (This frontend requires a controlling tty.) debconf: falling back to frontend: Teletype dpkg-preconfigure: unable to re-open stdin: Fetched 1961 kB in 15s (125 kB/s) Selecting previously unselected package librecode0:amd64. (Reading database ... 13116 files and directories currently installed.) Preparing to unpack .../librecode0_3.6-21_amd64.deb ... Unpacking librecode0:amd64 (3.6-21) ... Selecting previously unselected package fortune-mod. Preparing to unpack .../fortune-mod_1%3a1.99.1-7_amd64.deb ... Unpacking fortune-mod (1:1.99.1-7) ... Selecting previously unselected package fortunes-min. Preparing to unpack .../fortunes-min_1%3a1.99.1-7_all.deb ... Unpacking fortunes-min (1:1.99.1-7) ... Selecting previously unselected package fortunes. Preparing to unpack .../fortunes_1%3a1.99.1-7_all.deb ... Unpacking fortunes (1:1.99.1-7) ... Setting up librecode0:amd64 (3.6-21) ... Setting up fortune-mod (1:1.99.1-7) ... Setting up fortunes-min (1:1.99.1-7) ... Setting up fortunes (1:1.99.1-7) ... Processing triggers for libc-bin (2.19-0ubuntu6.6) ... ---> e50c3099531e Removing intermediate container bde8dbd6ec8f Step 3 : CMD /usr/games/fortune -a | cowsay ---> Running in 5ad27d0d8d44 ---> 1d657e944bfb Removing intermediate container 5ad27d0d8d44 Successfully built 1d657e944bfb
この時点でのイメージを確認。
$ docker images REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE docker-whale latest 1d657e944bfb About a minute ago 274.2 MB hello-world latest 0a6ba66e537a 11 weeks ago 960 B docker/whalesay latest ded5e192a685 7 months ago 247 MB
つくったイメージを実行。
$ docker run docker-whale
________________________________________
/ Beauty is one of the rare things which \
| does not lead to doubt of God. |
| |
\ -- Jean Anouilh /
----------------------------------------
\
\
\
## .
## ## ## ==
## ## ## ## ===
/""""""""""""""""___/ ===
~~~ {~~ ~~~~ ~~~ ~~~~ ~~ ~ / ===- ~~~
\______ o __/
\ \ __/
\____\______/
$ docker run docker-whale
_________________________________________
/ Once the toothpaste is out of the tube, \
| it's hard to get it back in. |
| |
\ -- H. R. Haldeman /
-----------------------------------------
\
\
\
## .
## ## ## ==
## ## ## ## ===
/""""""""""""""""___/ ===
~~~ {~~ ~~~~ ~~~ ~~~~ ~~ ~ / ===- ~~~
\______ o __/
\ \ __/
\____\______/ おまけ：Docker イメージ Docker VirtualMachine のダウンロード先は（Mac の場合）~/.docker/machine/machines/default/ になる。
- osx - Location of docker images downloaded by Docker (1.9.1) on Mac OS X - Stack Overflow
- Docker 公式の Installation on Mac OS X にも載ってた
$ ls -l ~/.docker/machine/machines/default/ total 930240 -rw-r--r-- 1 riocampos staff 31457280 1 4 20:45 boot2docker.iso -rw-r--r-- 1 riocampos staff 1029 1 4 20:47 ca.pem -rw-r--r-- 1 riocampos staff 1070 1 4 20:47 cert.pem -rw------- 1 riocampos staff 2550 1 4 20:47 config.json drwx------ 6 riocampos staff 204 1 4 21:10 default -rw------- 1 riocampos staff 444792832 1 4 23:24 disk.vmdk -rw------- 1 riocampos staff 1679 1 4 20:45 id_rsa -rw------- 1 riocampos staff 381 1 4 20:45 id_rsa.pub -rw------- 1 riocampos staff 1675 1 4 20:47 key.pem -rw------- 1 riocampos staff 1675 1 4 20:47 server-key.pem -rw-r--r-- 1 riocampos staff 1119 1 4 20:47 server.pem
この中の disk.vmdk に Docker イメージが入ってるのだと思われ（よく分からんけど）。
VM の一覧は docker-machine ls コマンド。
$ docker-machine ls NAME ACTIVE DRIVER STATE URL SWARM DOCKER ERRORS default * virtualbox Running tcp://192.168.99.100:2376 v1.9.1
おまけ：docker info コマンド実行結果
$ docker info Containers: 20 Images: 14 Server Version: 1.9.1 Storage Driver: aufs Root Dir: /mnt/sda1/var/lib/docker/aufs Backing Filesystem: extfs Dirs: 54 Dirperm1 Supported: true Execution Driver: native-0.2 Logging Driver: json-file Kernel Version: 4.1.13-boot2docker Operating System: Boot2Docker 1.9.1 (TCL 6.4.1); master : cef800b - Fri Nov 20 19:33:59 UTC 2015 CPUs: 1 Total Memory: 1.956 GiB Name: default ID: RYHF:EQZ3:BIII:PWN2:6LQ6:WO3V:VMHV:PAWR:H2AY:TELO:Z3WM:NDDR Debug mode (server): true File Descriptors: 11 Goroutines: 20 System Time: 2016-01-04T14:23:07.83919482Z EventsListeners: 0 Init SHA1: Init Path: /usr/local/bin/docker Docker Root Dir: /mnt/sda1/var/lib/docker Labels: provider=virtualbox
これ以降
自分のイメージをアップするとかの部分は省略。
Docker Toolbox の解説である
Installation on Mac OS X
を読んでいくのが良さそう。なお Docker Machine を使った場合の説明であり、廃止された Boot2Docker のものではない、とのこと。
Docker 関係リンク
「Quickstartがやることをコマンドで実行する場合」が載っているのが良記事。
一つ上と同じ著者。
2015/1/12版。
眼で見て学習。
いろいろ便利。
