Dockerで作るRails実行環境

%PDLFSͰ࡞Δ3BJMT࣮ߦ؀ڥ ੖ࠤٱ఩࢜

w ੖ࠤٱ఩࢜ w ϐΫγϒגࣜձࣾ w ͳΜͰ΋͢ΔΤϯδχΞ w αʔόαΠυ 3VCZ 1)1
$ w ϑϩϯτΤϯυ 3FBDU 5ZQFTDSJQU w ؀ڥߏங "84 7BHSBOU %PDLFS w ςετ 4FMFOJVN "QQJVN w 6OJUZ w झຯ͸ϓϩάϥϛϯάͱ$(࡞੒ ࣗݾ঺հ

%PDLFSͱ͸

%PDLFS w ίϯςφܕԾ૝؀ڥΛ࡞੒ɺ഑෍ɺ ࣮ߦ͢ΔͨΊͷϓϥοτϑΥʔϜ w ϛυϧ΢ΣΞͷΠϯετʔϧ΍֤छ ؀ڥઃఆΛίʔυԽ͠ɺͦͷ্ͰΞ ϓϦέʔγϣϯΛ࣮ߦͰ͖Δ

ίϯςφܕԾ૝؀ڥ

ίϯςφܕԾ૝؀ڥɹ w ϗετ04 -JOVY ͱΧʔωϧ෦෼Λڞ༗ͨ͠Ծ૝؀ڥ w Χʔωϧ෦෼͕ڞ༗͞ΕΔͨΊಉҰͷ04 -JOVY ্Ͱ͔͠ಈ͔͢ ͜ͱ͕Ͱ͖ͳ͍
w ैདྷͷԾ૝؀ڥ ϗετܕ ͱҧ͍ɺԾ૝Ϛγϯ෦෼ΛͨͯΔඞཁ͕ ͳ͍ͨΊɺΦʔόϔου͕গͳ͍

3BJMT w 3VCZPO3BJMT w 3VCZͰ࢖͏αʔόαΠυϑϨʔϜ ϫʔΫ w .7$ΞʔΩςΫνϟ w lઃఆΑΓن໿z
lಉ͜͡ͱΛ܁Γ ฦ͞ͳ͍Λҙࣝͨ͠ϓϩάϥϛϯ άελΠϧ

%PDLFSͷϝϦοτ

w ࣮ߦ؀ڥͷίʔυԽʹΑΔόʔδϣϯ؅ཧͱ༰қͳ഑෍ w εΫϥοϓϏϧυ w ΞϓϦέʔγϣϯ࣮ߦͷ࠶ݱੑ

Ͱ͸ɺ࡞͍͖ͬͯ·͠ΐ͏

%PDLFSͷ։ൃ؀ڥΛߏங w 7JSUVBM#PYͷΠϯετʔϧ w IUUQTXXXPSBDMFDPNUFDIOFUXPSLTFSWFSTUPSBHFWJSUVBMCPY EPXOMPBETJOEFYIUNM TT4PVSDF4JUF*EPUOKQa w 7BHSBOUͷΠϯετʔϧ w
IUUQTXXXWBHSBOUVQDPN w 7BHSBOU؀ڥͷΫϩʔϯ w IUUQTHJUIVCDPN)BSF4Q[%PDLFS

%PDLFSͷ։ൃ؀ڥΛߏங • vagrant upͰ7JSUVBM#PY্ʹ$PSF04؀ڥΛ࡞Δ w ్தɺύεϫʔυ͕ฉ͔ΕͨΒɺϗετϚγϯͷϩάΠϯʹ࢖ͬͯ ͍ΔύεϫʔυΛೖྗ • vagrant sshͰԾ૝ϚγϯʹϦϞʔτ઀ଓ

%PDLFSΛ৮ͬͯΈΑ͏

%PDLFSΛ৮ͬͯΈΑ͏ • docker run -it ruby:2.5.3 /bin/bash

%PDLFSΛ৮ͬͯΈΑ͏ • docker run -it ruby:2.5.3 /bin/bash • docker run
%PDLFSίϯςφͷىಈ • -itΦϓγϣϯlJz͸zJOUFSBDUJWFz lUz͸zUUZz • ruby:2.5.3 ࣮ߦ͢Δ%PDLFSΠϝʔδ • /bin/bashίϯςφ্Ͱ࣮ߦ͢ΔίϚϯυ

docker run -it ruby:2.5.3 /bin/bash

Ͱ͸ɺ3BJMTͷ؀ڥΛߏங͢Δͷʹඞཁͳ ύοέʔδΛΠϯετʔϧ͍͖ͯ͠·͢

curl -sL https://deb.nodesource.com/setup_10.x | bash - apt-get update -qq
apt-get install -y build-essential libpq-dev nodejs npm install -g yarn mkdir -p /usr/src/rails-server

ऴΘͬͨΒɺFYJUͰऴྃͯ͘͠ ͍ͩ͞

%PDLFSΛ৮ͬͯΈΑ͏ w εφοϓγϣοτ͕͋Δ͔֬ೝͯ͠Έ·͠ΐ͏ • docker ps -a

ఀࢭதͷίϯςφ͔Β৽͍͠Π ϝʔδΛ࡞Γ·͢

%PDLFSΛ৮ͬͯΈΑ͏ • docker commit 7e7d0dcf9978 prepare-rails • docker commit: ίϯςφ͔Β৽͍͠ΠϝʔδΛ࡞੒
• 7e7d0dcf9978: ϕʔεͱͳΔίϯςφID • prepare-rails: ࡞੒͢ΔΠϝʔδ໊

docker commit

εφοϓγϣοτ͸΋͏͍Βͳ ͍ͷͰফ͠·͠ΐ͏

%PDLFSΛ৮ͬͯΈΑ͏ • docker rm 7e7d0dcf9978 • docker rm: ίϯςφΛ࡟আ͢Δ •
7e7d0dcf9978: ࡟আ͢ΔίϯςφID

͜ΕͰɺ%PDLFSΠϝʔδ͕Ͱ͖ ͕͋Γ·ͨ͠

͜ͷΠϝʔδΛڞ༗͢Ε͹ɺͩ ΕͰ΋ಉ͡ίϯςφΛ࡞Ε·͢

Ͱ΋ʜ

ϑΝΠϧαΠζ͕Ͱ͔͍͔Βɺ͜ ΕΛ1VTI1VMM͢Δӡ༻͸͖͍ͭ

ͳʹΑΓɺόʔδϣϯ؅ཧ͠ʹ ͍͘

%PDLFSpMFͷग़൪Ͱ͢

%PDLFSpMFͷ࡞੒

%PDLFSpMFͷ࡞੒ ҎԼɺ%PDLFSpMFΛ)0.&TIBSFSBJMTBQQ্ʹ࡞੒ ͜ΕΛ΋ͱʹɺΠϝʔδΛϏϧυ͠·͢ FROM prepare-rails WORKDIR /usr/src/rails-server COPY Gemfile
/usr/src/rails-server/Gemfile COPY Gemfile.lock /usr/src/rails-server/Gemfile.lock RUN bundle install

%PDLFSpMFͷ࡞੒ • docker build —-tag author/rails-server:latest . • docker build:
Dockerfile͔ΒΠϝʔδΛ࡞੒ • —-tag: ΠϝʔδʹλάΛ͚ͭΔ • author/rails-server:latest: λά໊ • . : Dockerfile͕͋ΔσΟϨΫτϦ

Ͱ͸ɺ͜ͷ%PDLFSΠϝʔδΛ࢖ͬͯ 3BJMTΞϓϦέʔγϣϯΛ࡞Γ·͠ΐ͏

3BJMTΞϓϦέʔγϣϯߏங

3BJMTΞϓϦέʔγϣϯߏங EPDLFSSVOSNW18%VTSTSDSBJMTTFSWFSXVTSTSDSBJMT TFSWFSBVUIPSSBJMTTFSWFSMBUFTUCJOCBTIDCVOEMFFYFDSBJMT OFXNZBQQ5GXFCQBDLSFBDUEBUBCBTFNZTRMTLJQDP⒎FF TLJQTQSPDLFUTDENZBQQCVOEMFFYFDSBLF XFCQBDLFSJOTUBMMCVOEMFFYFDSBLFXFCQBDLFSJOTUBMMSFBDU CVOEMFFYFDSBLFXFCQBDLFSJOTUBMMUZQFTDSJQU ҎԼɺ)0.&TIBSFSBJMTBQQ্Ͱ࣮ߦ

3BJMTΞϓϦέʔγϣϯߏங EPDLFSSVOSNW18%VTSTSDSBJMTTFSWFSXVTSTSDSBJMT TFSWFSBVUIPSSBJMTTFSWFSMBUFTU w SNίϚϯυ࣮ߦޙʹίϯςφΛফ͢ w WϘϦϡʔϜΛϚ΢ϯτ͢Δ$PSF04ଆͷΧϨϯτσΟϨΫτϦΛ VTSTSDSBJMTTFSWFSʹϚ΢ϯτ͍ͯ͠Δ w
Xίϯςφ࣮ߦ࣌ͷϫʔΩϯάσΟϨΫτϦΛઃఆ w BVUIPSSBJMTTFSWFSMBUFTU࣮ߦ͢Δ%PDLFSΠϝʔδ

3BJMTΞϓϦέʔγϣϯߏங CJOCBTIDCVOEMFFYFDSBJMTOFXNZBQQ5GXFCQBDLSFBDU EBUBCBTFNZTRMTLJQDP⒎FFTLJQTQSPDLFUT w 3BJMTΞϓϦͷ࡞੒ίϚϯυ w 5σϑΥϧτͷNJOJUFTUΛ࡞Βͳ͍ w G(FNpMF͕͋ͬͯ΋্ॻ͖͢Δ
w XFCQBDLSFBDUXFCQBDLͰ3FBDUΛ࢖͏ w EBUBCBTFNZTRM.Z42-Λσʔλϕʔεʹ͢Δ w TLJQDP⒎FF$P⒎FF4DSJQUΛ࡞Βͳ͍ w TLJQTQSPDLFUT4QSPDLFUTΛΠϯετʔϧ͠ͳ͍

3BJMTΞϓϦέʔγϣϯߏங DENZBQQCVOEMFFYFDSBLFXFCQBDLFSJOTUBMMCVOEMF FYFDSBLFXFCQBDLFSJOTUBMMSFBDUCVOEMFFYFDSBLF XFCQBDLFSJOTUBMMUZQFTDSJQU w 8FCQBDLFSͷઃఆ w DENZBQQSBJMTOFXͰ࡞੒ͨ͠3BJMTΞϓϦ·ͰҠಈ w
CVOEMFFYFDSBLFXFCQBDLFSJOTUBMM8FCQBDLFSͷΠϯετʔϧ w CVOEMFFYFDSBLFXFCQBDLFSJOTUBMMSFBDU8FCQBDLFSʹSFBDUΛೖΕΔ w CVOEMFFYFDSBLFXFCQBDLFSJOTUBMMUZQFTDSJQU8FCQBDLFSʹ UZQFTDSJQUΛೖΕΔ

͜ΕΛ͢Δͱɺ3BJMTΞϓϦ͕ϗ ετϚγϯʹ΋࡞੒͞Ε͍ͯΔ

3BJMTαʔόىಈ

Ͱ͸ɺ3BJMTαʔόΛىಈͯ͠Έ ·͠ΐ͏

3BJMTαʔόͷىಈ ҎԼɺ%PDLFSpMFΛ)0.&TIBSFSBJMTBQQNZBQQ্ʹ࡞੒͠ɺ Ϗϧυ FROM ruby:2.5.3 ENV APP_DIR /usr/src/myapp RUN
mkdir -p ${APP_DIR} WORKDIR $APP_DIR RUN curl -sL https://deb.nodesource.com/setup_10.x | bash - && \ apt-get update -qq && apt-get install -y build-essential libpq-dev nodejs mysql-client &&\ npm install -g yarn COPY . $APP_DIR RUN bundle install --path vendor/bundle CMD ["bundle", "exec", "rails", "server", "-b", "0.0.0.0"]

3BJMTαʔόͷىಈ EPDLFSSVOQBVUIPSSVOOFSMBUFTU w QϙʔτϑΥϫʔυͷઃఆɻ$PSF04ଆͷͱίϯ ςφଆͷΛϑΥϫʔυ͍ͯ͠Δ

.Z42-ʹ઀ଓͰ͖ͳ͍ͷͰɺ.Z42- ༻ͷίϯςφ΋ىಈ͠·͠ΐ͏

ͦ͏͢Δͱɺෳ਺ͷίϯςφؒ Ͱ௨৴ͤ͞Δඞཁ͕ग़ͯ͘Δ

ͦ͜Ͱ

EPDLFSDPNQPTF

EPDLFSDPNQPTF w 3BJMTଆͷ%#ઃఆΛमਖ਼ w )0.&TIBSFSBJMTTFSWFSNZBQQDPOpHEBUBCBTFZNMͷEFGBVMU෦ ෼ΛҎԼͷΑ͏ʹमਖ਼ default: &default adapter:
mysql2 encoding: utf8 pool: 5 username: root password: <%= ENV['MYAPP_DATABASE_PASSWORD'] %> host: <%= ENV['MYAPP_DATABASE_HOST'] %>

EPDLFSDPNQPTF version: '2' services: db: image: mysql:5.7 environment: -
MYSQL_ROOT_PASSWORD=mysql ports: - 3306:3306 networks: - default web: environment: - MYAPP_DATABASE_PASSWORD=mysql - MYAPP_DATABASE_HOST=db build: rails-app/myapp ports: - 3000:3000 networks: - default depends_on: - db networks: default: driver: bridge w EPDLFSDPNQPTFZNMΛ)0.&TIBSFʹ ࡞੒ w ͦͷޙɺdocker-compose upͰىಈ͢Δ

EPDLFSDPNQPTF w %#͕࡞੒͞Εͯͳ͍ͷͰɺམͪͯ͠·͍·͢ w ͳͷͰɺىಈ࣌ʹ࡞੒ͱϚΠάϨʔγϣϯΛ࣮ߦ͢ΔΑ͏ʹ͠· ͠ΐ͏

EPDLFSDPNQPTF w .Z42-ͷ্ཱ͕ͪΓΛ؂ࢹͯ͠ ࣮ߦ͢ΔγΣϧεΫϦϓτΛ࡞ ੒ w ͜ΕΛɺ)0.&TIBSFSBJMT TFSWFSNZBQQʹ഑ஔ͓ͯ͘͠ #!/bin/sh
set -e host="$1" shift user="$1" shift password="$1" shift cmd="$@" echo "Waiting for mysql" until mysql -h"$host" -u"$user" -p"$password" &> /dev/null do >$2 echo -n "." sleep 1 done bundle exec rake db:create bundle exec rake db:migrate exec $cmd

EPDLFSDPNQPTF w EPDLFSDPNQPTFZNMͷXFC෦෼Λमਖ਼ w ҎԼͷҰߦΛɺEFQFOET@POͷԼʹهࡌ w ZNMͳͷͰΠϯσϯτʹ஫ҙ command: sh
./wait-for-it.sh db root mysql bundle exec rails server -b 0.0.0.0

docker-compose up —buildͰىಈ͠ͳ͓͢ͱ

࠷ޙʹ w $USM$ͰEPDLFSDPNQPTF͸ऴྃͰ͖ΔͷͰɺ࣮ߦͯ͠ΈͨΒఀࢭ ͠·͠ΐ͏ w ࠓճ্ཱͪ͛ͨ7BHSBOU؀ڥ͸WBHSBOUIBMUͰऴྃͰ͖·͢ͷͰɺ ࢖͍ऴΘͬͨΒऴྃ͠·͠ΐ͏ w ࠓճͷϋϯζΦϯΛ΋ͱʹɺ%PDLFSΛ͍Ζ͍Ζͳͱ͜ΖͰ࢖ͬͯΈ ͍ͯͩ͘͞

FROM <image> ϕʔεʹͳΔΠϝʔδΛઃఆ USER <user> ࣮ߦϢʔβͷ੾Γସ͑ ENV <key> <value>
ΠϝʔδϏϧυ࣌ʹ࢖༻͢Δ؀ڥม਺Λઃఆ RUN <command> ΠϝʔδϏϧυ࣌ʹ࣮ߦ͢ΔίϚϯυΛઃఆ CMD <command> ίϯςφ࡞੒࣌ʹ࣮ߦ͢ΔίϚϯυΛઃఆ COPY <src>... <dest> <src>͔Β<dest>ʹϑΝΠϧΛίϐʔ͢Δ ADD <src>... <dest> tarϑΝΠϧͷల։΍ɺϦϞʔτURL͔ΒͷऔಘΛߦ ͍͍ͨ৔߹ͷΈ࢖༻͢Δ WORKDIR <directory> ΠϝʔδϏϧυ࣌ʹ࣮ߦ͢ΔϫʔΩϯάσΟϨΫτ ϦΛઃఆ͢Δ ͓·͚%PDLFSpMFνʔτγʔτ

Dockerで作るRails実行環境

Dockerで作るRails実行環境

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