docker-compose patterns 201603

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Docker Meetup Tokyo #6 docker-compose patterns

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@pottava தؙ ྑ 461*/'*OD $PNQMFUFE %PDLFS"ENJOJTUSBUJPOBOE0QFSBUJPOT "84$FSUJpFE 4" %FW0QT&OHJOFFS1SP

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தؙ ྑ "VUPNBUFECVJME EPDLFSSVO

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தؙ ྑ "VUPNBUFE CVJME

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ձࣾʢ461*/'εϐϯϑʣͰ͸ %PDLFSΫϥελͰෳ਺λΠτϧຊ൪ӡ༻தʂ ։ൃ΋ςετ΋΋ͪΖΜ͢΂ͯ%PDLFS

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+"846( ίϯςφࢧ෦ º $-* ઐ໳ࢧ෦ "NB[PO &$4 &$3 ϋϯζΦϯ Ր ʙ!/)/ςίϥεגࣜձࣾ͞Μ !KBXTVHDPOUBJOFS

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patterns

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͍ΖΜͳίϯςφͷ࢖͍ํ5JQTΛ EPDLFSDPNQPTFZNMͰ·ͱΊͯΈ·ͨ͠

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ίϯςφͷ࢖͍ํΛ੔ཧ͢Δͱ͖ʹ Կ͔ͷ͓໾ʹཱͯ͹ͱɾɾ

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·ͣ͸

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docker

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docker patterns [ جຊܗ ]

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αʔϏε ίϯςφʔ* service containers ίϯςφͷ໾ׂΛ෼ྨ͢ΔͨΊͷศٓతͳ୯ޠͰ͢

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αʔϏε ίϯςφʔ service containers ੈͷதͷେ൒͸͖ͬͱ͜Εɻ ֎෦͔ΒͷϦΫΤετʹԠ౴͢Δ͜ͱΛظ଴͞Ε͍ͯΔɻ ଟ͘ͷ৔߹ϙʔτ͸ύϒϦογϡ͞ΕɺՔಇ͠ଓ͚Δ͸ͣͷίϯςφɻ IPTUNBDIJOF NZTRM DPOUBJOFS NZTRM DPOUBJOFS NZTRM DPOUBJOFS FH.Z42- ZPVSDPNQVUFS .Z42-DMJFOU

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// Nginx, Apache ͳͲͷ Web αʔό web: image: nginx ports: - "80:80" volumes: - "./content:/usr/share/nginx/html" // MySQL, PostgreSQL ͳͲͷ DB αʔό db: image: mysql:5.7 ports: - "3306:3306" volumes: - "./init-scripts:/docker-entrypoint-initdb.d" environment: - MYSQL_ROOT_PASSWORD - MYSQL_DATABASE - MYSQL_USER - MYSQL_PASSWORD // Redis, Memcached ͳͲͷΩϟογϡαʔό cache: image: redis ports: - "6379:6379" // ͳͲͳͲ..

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w αʔϏεతʹศརͳىಈ࣌Φϓγϣϯ w SFTUBSUίϯςφʹ෮׆ͷຐ๏͕͔͔Δɻͨͩ͠ϦεΫ΋͋Δɾɾ w MPHESJWFSศརͳϩάυϥΠόʔ͕૿͑·ͨ͠ʂ w OFUEPDLFSDPNQPTFͱͷ૊Έ߹Θͤൈ܈ w ߟྀ͢΂͖ϙΠϯτ w όΠφϦʗιʔείʔυ͸SVOWʁ%PDLFSpMF"%% w ͪͳΈʹฐࣾ͸%PDLFSΒ͠͞Λੜ͔ͯ͠ w ։ൃத͸ιʔείʔυΛϚ΢ϯτ w ςετʗධՁʗຊ൪؀ڥ͸%PDLFSΠϝʔδʹࠝแ w σϓϩΠΛߟ͑Δͱɺ΍͸Γ%PDLFSJNBHF͸খ͘͢͞΂͖ w "MQJOF-JOVYਆʢ͚ͲNVTMMJCDɾɾʣ w ຊ֨తʹӡ༻͠Α͏ͱ͢Δͱͦͷଞࢮ͵΄Ͳ͍Ζ͍Ζ

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δϣϒ ίϯςφʔ* job containers ίϯςφͷ໾ׂΛ෼ྨ͢ΔͨΊͷศٓతͳ୯ޠͰ͢

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δϣϒ ίϯςφʔ job containers DSPOͷΑ͏ʹཪͰͦͦ͜͜ؤு͍ͬͯΔίϯςφɻ ։ൃɾӡ༻ͷݱ৔ʹ࣋ͪࠐΉͳΒ͜ͷ෼໺͔Β࢝ΊΔͱ͍͍͔΋͠Εͳ͍ɻ ఆ࣌όονॲཧɺ$*ςετɺʢϩάυϥΠόΛͳ͔ͥ࢖Θͳ͍ʣϩά؅ཧͳͲ IPTUNBDIJOF UPNDBU DPOUBJOFS NZTRM DPOUBJOFS qVFOUqVFOUE DPOUBJOFS FH'MVFOUEʢࠓͬΆ͘ͳ͍͚ͲϚ΢ϯτͨ͠ϩάϑΥϧμΛ؂ࢹʣ "NB[PO  $MPVE8BUDI-PHT &MBTUJDTFBSDI

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// ఆ࣌όονॲཧ batch: image: someones/cool-image:batch environment: - CRON="5 0 * * *" - MYSQL_DATABASE - MYSQL_USER - MYSQL_PASSWORD // CI ςετ test: image: someones/cool-image:test command: go test ./... volumes: - INTERVAL=1d - REPOSITORY=github.com/your/project working_dir: /go/src/github.com/your/project // ϩάసૹʢਂ෵ͳཧ༝ͰϑΥϫʔμʔͰ͸ͳ͍έʔεʣ fluentd: image: fluent/fluentd volumes: - "/path/to/dir:/fluentd/etc:ro" - "/var/log:/var/log/" environment: - FLUENTD_CONF=my.conf // ͳͲͳͲ..

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w ΋͠όονॲཧʹႈ౳ੑ͕͋ΔͳΒɺίϯςφಋೖʹ͸΋͍ͬͯ͜ w ͦͷଞϙʔτΛެ։ͤͣɺҰ࣌తʹམͪͯ΋͍͍αʔϏε΋޲͍ͯΔ w ϗετͷϦιʔεΛޮՌతʹ࢖͏Α͏؆୯ʹεέʔϧͰ͖Δ w FH EPDLFSDPNQPTFTDBMFCBUDI

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σʔλ ϘϦϡʔϜ ίϯςφʔ data volume containers

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σʔλ ϘϦϡʔϜ ίϯςφʔ data volume containers γϯϓϧʹϗετͷσΟϨΫτϦΛϚ΢ϯτ͢Δͷͱ͸ҧ͍ɺ ؒʹઐ༻ͷίϯςφΛڬΉ͜ͱͰʜ ɾෳ਺ͷίϯςφ͔ΒϦΞϧλΠϜʹಉ͡ϑΝΠϧΛࢀরՄೳ ɾαʔϏείϯςφ͕ഁغ͞ΕͨޙͰ΋όοΫΞοϓ΍ϦετΞ͕؆୯ IPTUNBDIJOF NZTRM DPOUBJOFS EBUBWPMVNF DPOUBJOFS FH.Z42- WPMVNFTGSPN W WPMVNF IPTUpMFTZTUFN $ docker create --name data \ -v /var/lib/mysql busybox $ docker run -p 3306:3306 \ --volumes-from data mysql:5.7

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version: "2" services: // Data volume container dvc: image: "busybox" volumes: - /var/lib/mysql // Data volume container Λ࢖ͬͨ MySQL db1: image: mysql:5.7 ports: - "3306:3306" volumes_from: - dvc // ϗετϚγϯ͔Β௚઀Ϛ΢ϯτ͍ͯ͠Δ MySQL db2: image: mysql:5.7 ports: - "3307:3306" volumes: - "mysql-data:/var/lib/mysql" volumes: mysql-data:

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docker patterns [ ࢧԉܥ ]

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αΠυΧʔύλʔϯ sidecar pattern

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EBUBWPMVNF DPOUBJOFS αΠυΧʔ ύλʔϯ sidecar pattern ͢Ͱʹଘࡏ͢ΔྡͷίϯςφΛ֦ு͠ɺڧԽ͢ΔͨΊͷ΋ͷɻ ͜ΕͰΞϓϦέʔγϣϯଆ͸ࣗ෼ͷؔ৺ͷΈʹूதͰ͖Δ͠ɺ αΠυΧʔଆ΋ͲΜͳΞϓϦέʔγϣϯʹͰ΋࢖͍·ΘͤΔ෦඼ʹͳΕΔɻ IPTUNBDIJOF OPEFKTTMJN DPOUBJOFS FHϦϙδτϦͷߋ৽ TPNFHJUTZOD DPOUBJOFS WPMVNFTGSPN WPMVNFTGSPN

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w EPDLFSDPO͓͢͢Ίಈը 5IFEJTUSJCVUFETZTUFNUPPMLJU$POUBJOFSQBUUFSOTGPSNPEVMBSEJTUSJCVUFETZTUFNEFTJHO 1SFTFOUFECZ#SFOEBO#VSOT 4PGUXBSF&OHJOFFS (PPHMF IUUQTZPVUVCF1IUK*U UNT

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Ξϯόαμʔύλʔϯ ambassador pattern

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Ξϯόαμʔ ύλʔϯ ambassador pattern αʔϏείϯςφͱಉ͡ωοτϫʔΫωʔϜεϖʔεʹ͋ΔίϯςφͰ Ͳ͔͜ผͷͱ͜ΖͰಈ͘αʔϏεͷϓϥϛϯάʢαʔϏεΛݟ͚ͭɺ ܨ͛ɺෛՙ෼ࢄʣΛͯ͘͠ΕΔͷ͕Ξϯόαμʔɻ εέʔϧ͢Δʹ͸ඞਢͷύλʔϯɻ IPTUNBDIJOF QIQ DPOUBJOFS [BQJFSUXFNQSPYZ DPOUBJOFS FHUXFNQSPYZ NFNDBDIFE NFNDBDIFE MPDBMIPTU

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w SF*OWFOU͓͢͢Ίࢿྉ 'SPN-PDBM%PDLFS%FWFMPQNFOUUP1SPEVDUJPO%FQMPZNFOUz 1SFTFOUFECZ+ÉSÔNF1FUB[[POJ %PDLFS*OD IUUQXXXTMJEFTIBSFOFUSZPOBLBNBSVGSPNEFWUPQSPEBXTSFJOWFOU

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Ξμϓλʔύλʔϯ adapter pattern

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Ξμϓλʔ ύλʔϯ adapter pattern αʔϏείϯςφ΁ͷΠϯλʔϑΣΠεΛ౷Ұ͢ΔͨΊͷίϯςφɻ ͜ΕʹΑΓɺϞχλϦϯάͳͲ֎͔ΒͷϦΫΤετʹରͯ͠ αʔϏείϯςφͷத਎ʹΑΒͣɺಉ͡ΠϯλʔϑΣΠεͰԠ౴Ͱ͖Δɻ IPTUNBDIJOF SFEJTBMQJOF DPOUBJOFS GPPSFEJTFYQPSUFS DPOUBJOFS FH3FEJTFYQPSUFS NVOJO /BHJPT MPDBMIPTU

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؂ࢹɾ؅ཧίϯςφʔ monitoring containers

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؅ཧɾ؂ࢹ ίϯςφʔ monitoring containers %PDLFSίϯςφͷঢ়ଶΛ೺Ѳͨ͠ΓɺͦͷϝτϦΫεΛऩूͨ͠Γ ίϯςφ͕ಈ͘ϗετͷϝτϦΫεΛऩूͨ͠Γ͢Δίϯςφɻ %PDLFSͷιέοτΛίϯςφʹ౉͢΋ͷ΋ଟ͍ɻ IPTUNBDIJOF EKBOHP DPOUBJOFS QPTUHSFT DPOUBJOFS HPPHMFDBEWJTPS DPOUBJOFS FHD"EWJTPS *OqVY%# (SBGBOB

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w %BUB%PH΍.BDLFSFMͳͲ΋ಉ͡࢓૊ΈͰΤʔδΣϯτ͕ ɹϝτϦΫεΛσʔλऩूαʔόʹૹ৴͍ͯ͠Δɻ w ͨͩϝτϦΫεΛ֎෦ʹૹ৴͢ΔλΠϓͱɺTXBSN΍&$4BHFOUͷ ɹΑ͏ʹͦͷϗετͷίϯςφΛ؅ཧ͢ΔλΠϓ͕͋Δɻ

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docker patterns [ ςϯϙϥϦܥ ]

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୯ൃίϚϯυύλʔϯ one-off commands pattern

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୯ൃίϚϯυύλʔϯ one-off commands pattern ϗετʹΠϯετʔϧ͞Ε͍ͯͳ͍ϛυϧ΢ΣΞ΍$-*πʔϧΛ࢖ͬͯ ϗετ্ͷϑΝΠϧ΍֎෦ϦιʔεʹӨڹΛ༩͑Δίϯςφɻ ϗετΛΫϦʔϯʹอͯɺπʔϧͷෳ਺όʔδϣϯར༻΋༰қʹͳΔɻ ZPVSDPNQVUFSXJUIPVU+BWB FH(SBEMF WPMVNF CVJME $ docker create --name cache \ -v /root/.gradle/caches \ busybox $ docker run --rm \ -v `pwd`/app:/app \ --volumes-from cache \ pottava/gradle:2.9 \ build HSBEMFDPNNBOEDPOUBJOFS

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# e.g. docker-compose run build idea: image: pottava/gradle:2.9 command: idea volumes: - "./app:/app" volumes_from: - caches idea-fix: image: busybox command: sed -i -e "s/\/root\/\.gradle\/caches/\.\.\/caches/g" /app/project.iml volumes: - "./app:/app" build: image: pottava/gradle:2.9 command: build volumes: - "./app:/app" volumes_from: - caches caches: image: busybox volumes: - "./caches:/root/.gradle/caches" clean: image: pottava/gradle:2.9 command: clean volumes: - "./app:/app"

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w Α͘ݟΔͷ͸BMJBTʹઃఆͯ͠͠·͏ྫ ɹFH BMJBTBXTEPDLFSSVOSNW)0.&BXTSPPUBXTQPUUBWBBXTDMJ w 1*%ΦϓγϣϯʢEPDLFSSVOQJElIPTUʣΛ࢖͏ͱ ɹ͜Μͳ͜ͱ΋Ͱ͖ΔʂʢެࣜυΩϡϝϯτ΄΅ͦͷ··ɾɾʣ DBU&0'%PDLFSpMF '30.BMQJOF 36/BQLBEEOPDBDIFIUPQ $.% &0' EPDLFSCVJMEUNZIUPQ EPDLFSSVOJUSNQJEIPTUNZIUPQ w $PSF04ͳͲ%PDLFSલఏͷ04ͷ৔߹ɺ͜ͷύλʔϯ͸ͱͯ΋ศརɻ ɹπʔϧ͕%PDLFSJ[F͞Ε͍ͯΕ͹͢΂ͯίϯςφͰ׬݁Ͱ͖Δɻ

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εΫϦϓτࢼߦࡨޡύλʔϯ shell scripts pattern

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εΫϦϓτࢼߦࡨޡ ύλʔϯ shell scripts pattern ίϯςφ͸ͱʹ͔͘ىಈɾഁغ͕௒଎ɻDPNNJUͰঢ়ଶͷอଘ΍࠶։΋؆୯ɻ γΣϧεΫϦϓτΛτϥΠΞϯυΤϥʔͰࢼ͢؀ڥͱͯ͠࠷దʂ "OTJCMFͳͲߏ੒؅ཧεΫϦϓτΛ࡞ͬͨΓɺ%PDLFSpMFΛ࡞ͬͨΓɾɾ ZPVSDPNQVUFS DFOUPTDPOUBJOFS FH$FOU04 $ docker run -it centos:6 bash [root /]# yum install -y ruby [root /]# exit $ ID=`docker ps -alq` $ docker commit $ID mine/ruby $ docker run -it mine/ruby bash [root /]# ruby -v [root /]# .. NJOFSVCZDPOUBJOFS

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docker patterns [ ಛघ ]

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ωοτϫʔΫίϯςφʔ* networking containers ίϯςφͷ໾ׂΛ෼ྨ͢ΔͨΊͷศٓతͳ୯ޠͰ͢

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ωοτϫʔΫ ίϯςφʔ networking containers ෳ਺ίϯςφͰωοτϫʔΫΠϯλʔϑΣΠεΛڞ༗͢ΔͨΊͷίϯςφɻ ωοτϫʔΫίϯςφʹܨ͕ͬͨίϯςφ͸͓ޓ͍MPDBMIPTUͰ௨৴͕Մೳɻ ϗετϚγϯͰϙʔτͷڝ߹͕ى͖ͳ͍ͷͰɺ։ൃத͸ศརͳ͜ͱ΋ɻ IPTUNBDIJOF OHJOY DPOUBJOFS OFUXPSLJOHDPOUBJOFS OHJOY DPOUBJOFS FH"QBDIF ZPVSDPNQVUFS #SPXTFS IUUQ IUUQ

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EPDLFSฤ ͓ΘΓ

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ͯ͞ɺ΍ͬͱ

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docker-compose

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docker-compose ?

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খ͘͞෼ׂ͞ΕͨαʔϏεΛ·ͱΊͯ ΤϯυϢʔβʔʹҙຯͷ͋Δ୯ҐͰ αʔϏεΛఏڙ͢Δπʔϧ

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খ͘͞෼ׂ͞ΕͨαʔϏεʁ

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Modular Container Design

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ɹେ͖ͳ՝୊Λখ͞ͳ՝୊ʹΘ͚͍ͯ͜͏ɻ ΑΓՄ༻ੑ͕ߴ͘εέʔϧ͢ΔΑ͏ʹ ؔ৺΋Ϧιʔε΋෼཭ͯ͠ ɹ֤ίϯςφʹಠཱͨ͠໌֬ͳڥքΛɻ ɹ࠷ऴతͳαʔϏε͸ͦΕΒΛ૊Έ߹Θͤͯʂ

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ɹͲͪΒ͕ΑΓ๬·͍͠ઃܭʁ

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$BTF" CJUOBNJXPSEQSFTT DPOUBJOFS $BTF# OHJOY DPOUBJOFS XPSEQSFTT DPOUBJOFS NBSJBEC DPOUBJOFS proxy: image: nginx ports: - "443:443" volumes: - “./nginx.conf:/etc/nginx/nginx.conf:ro“ links: - wp:upstream wp: image: wordpress links: - db:mysql db: image: mariadb:10.1 environment: MYSQL_ROOT_PASSWORD: foo wp: image: bitnami/wordpress ports: - "443:443"

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$BTF" CJUOBNJXPSEQSFTT DPOUBJOFS ɾγϯϓϧͰ࢖͍΍ͦ͢͏ ɾ֤Ϟδϡʔϧ୯ҐͰ؅ཧ͠΍͍͢ ɾOHJOY͚ͩόʔδϣϯΞοϓʗઃఆมߋ ɾXPSEQSFTT͚ͩεέʔϧ ɾNBSJBECΛNZTRMʹஔ͖׵͑ ɾؔ৺͕෼཭͞Ε͍ͯΔ ɾIUUQ ੩తϑΝΠϧΩϟογϡOHJOY ɾCBDLVQSFTUPSFNBSJBEC ɾʢ͜ͷྫ͸ඍົ͚ͩͲʣՄ༻ੑΛߴΊΒΕΔ ɾ%#͕ࢮΜͰ΋ιʔϦʔϖʔδ͸ͩͤΔ $BTF# OHJOY DPOUBJOFS XPSEQSFTT DPOUBJOFS NBSJBEC DPOUBJOFS

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ద੾ͳϞδϡʔϧʹ෼ׂ͞Ε͍ͯΕ͹ αʔϏεશମ͕҆ఆͯ͠εέʔϧ΋͢Δ

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αʔϏεͷ෦෼తͳΞοϓσʔτ΋Ͱ͖Δ͠ όάϑΟοΫε͸ͦͷϞδϡʔϧΛ࢖͏ ͋ΒΏΔαʔϏεʹ͙͢ద༻Ͱ͖Δ ʮमਖ਼ͷԣల։ʯ͸ى͖ͳ͍

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ʢϚΠΫϩαʔϏεಛ༗ͷɺ৽͍͠՝୊Λ ผ్ղܾ͢Δඞཁ͸͋Δ͚Ͳʣ

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ʢಛʹ։ൃ؀ڥͳΒʣ EPDLFSDPNQPTFΛ࢖͑͹ Ϟδϡʔϧͳߏ੒΋؅ཧ͠΍͍͢Αʁ

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docker-compose patterns [ جຊܗɾςϯϙϥϦܥ ]

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EPDLFSฤʹ͋ΔEPDLFSDPNQPTFZNM ͦΕ͕͢΂ͯͳͷͰׂѪ͠·͢

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docker-compose patterns [ Networking ]

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Ұ൪ޠΓ͔ͨͬͨͷ͜͜ͳΜͰ͕͢ ർΕͨͷͰ·ͨͷػձʹৡΓ·͢

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EPDLFSDPNQPTFQBUUFSO

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Appendix

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![FNCVUTV͞Μ

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PS[ˡࢲʢલဠϑΝϯʣ

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Θͨ͠ͷ-5ͷഒ༗ҙٛͳͷͰ ͜Ε͚ͩԱ͑ͯؼ͍ͬͯͩ͘͞

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ίϯςφٕज़ͱීٴ͕γεςϜɾΠϯςάϨʔλʹ༩͑ΔӨڹz 1SFTFOUFECZ.BTBIJUP;FNCVUTV 5FDIOPMPHZ&WBOHFMJTU IUUQXXXTMJEFTIBSFOFU[FNCVUTVEPDLFSJNQBDUUPTZTUFNJOUFHSBUJPOT NEW!!