CN Buildpacksが作る未来

by Kazuhiko Yamashita

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ʙՆͷ೔ͷSPBEUPʙ !QZBNB(.01FQBCP *OD ϖύϘςοΫΧϯϑΝϨϯε $/#VJMEQBDLT͕ ࡞Δະདྷ

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γχΞɾϓϦϯγύϧΤϯδχΞ ࢁԼ࿨඙!QZBNB ٕज़෦ٕज़ج൫νʔϜ

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CVJMEFSTDPO ߴूੵίϯςφϗεςΟϯάʹ͓͚ΔϘτϧωοΫͱͦͷղ๏

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-JOVYͷ౷߹Ϣʔβʔ؅ཧ 50.-ܗࣜ )551+40/ -%"1΍%#ͷ؅ཧ͕ෆཁ ѻ͍΍͍͢ϑΥʔϚοτ ൚༻ੑɾ֦ுੑ IUUQTTUOTKQ

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-JOVY MJCOTTTUOT JEFYBNQMF VJE FYBNQMF HJE FYBNQMF HSPVQT FYBNQMF VTFS OBNFFYBNQMF <\ OBNFFYBNQMF JE ^> γϯϓϧͰࣗ༝౓ͷߴ͍ઃܭ αʔό࣮૷΋͍ΘΏΔ3&45GVM෩ɺMJCOTTTUOT͔Β೚ҙͷίϚϯυΛ࣮ߦͨ͠ ݁ՌΛར༻Ͱ͖Δ࢓૊Έ΋͋ΔͷͰΫϥΠΞϯτଆͷ֦ு΋ࣗ༝ࣗࡏ JE LFZT<TTI> HSPVQ@JE TUOTDPOG

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EPDLFSSVOOBNFTUOTETUOTTUOTMBUFTU EPDLFSFYFDJUTUOTCJOCBTI JEFYBNQMF VJE FYBNQMF HJE FYBNQMF HSPVQT FYBNQMF ͙͢ʹࢼͤ·͢ DVSMGT4-IUUQTSFQPTUOTKQTDSJQUTZVNSFQPTIcTI DVSMGT4-IUUQTSFQPTUOTKQTDSJQUTBQUSFQPTIcTI %PDLFS $FOU04 VCVOUVEFCJBO

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ϗεςΟϯάࣄۀ &$ࢧԉࣄۀ ϋϯυϝΠυɾͦͷଞࣄۀ

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೥ ϩϦϙοϓʂϨϯλϧαʔόαʔϏεఏڙ։࢝ ೥ ೥ ೥ ϔςϜϧαʔϏεఏڙ։࢝ 1ࢁ͕ϖύϘʹೖࣾʂʂ̍ ೥݄೔ ࣛࣇౡݝग़ਫࢢʹ͓͍ͯ1ࢁര஀ʂʂ̍ ೥ ݱࡏɾ૑ۀ೥໨ ϜʔϜʔυϝΠϯαʔϏεఏڙ։࢝

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$MPVE/BUJWF #VJMEQBDLT

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$MPVE/BUJWF#VJMEQBDLTʹ͍ͭͯ %PDLFSpMFͱͷൺֱ ϖύϘͰͷ׆༻ࣄྫ $MPVE/BUJWF#VJMEQBDLT͕ى͜͢มԽ ๻ͷ൒ੜɺՄѪ͔ͬͨ༮গظʹ͍ͭͯ ࠓ೔࿩͢͜ͱ

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w IFSPLV΍$MPVE'PVOESZͰ։ൃ͞Ε͖ͯͨίϯςφ  Ϗϧυͷ࢓૊Έ w ΞϓϦέʔγϣϯίʔυΛݩʹίϯςφΠϝʔδΛੜ੒ w ྫDPNQPTFSKTPO͕͋Ε͹1)1ΛΠϯετʔϧ͢Δ #VJMEQBDL

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#VJMEQBDLXJUIIFSPLV IUUQTKQIFSPLVDPNFMFNFOUTCVJMEQBDLT

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#VJME1BDLͷ՝୊ IFSPLV΍$MPVE'PVOESZͷ࣮૷Ͱ ૬ޓʹඍົʹಈ͔ͳ͍͜ͱ͕͋Δ

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w ೥ʹ1JWPUBMͱIFSPLVʹΑͬͯ։࢝ w $/$'$MPVE/BUJWF4BOECPY΁௥Ճ w ݱঢ়͸7FSTJPȌͷ4QFD͕ϦϦʔε͞Ε͍ͯΔ w ඪ४Խ͞Εͨ4QFDʹج͖ͮ0$*ΠϝʔδΛ࡞੒Մೳ $MPVE/BUJWF#VJMEQBDLT $/#

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w ۀքඪ४Խஂମ w 0$*Wͱ͍͏ίϯςφͷ3VOUJNF4QFDͱ *NBHF 'PSNBU4QFDΛఆΊͨ w 0$*ΠϝʔδͰ͋Ε͹0$*Wʹ४ڌ͍ͯ͠Δ؀ڥͰಈ࡞͢ Δ͜ͱ͕Ͱ͖Δ 0$* 0QFO$POUBJOFS*OJUJBUJWF

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w MJGFDZDMF QBDLͷࢀߟ࣮૷͕HJUIVCDPNCVJMEQBDLʹͯ ެ։͞Ε͍ͯΔɻQBDLίϚϯυ͸8SBQQFSͰ࣮ଶ͸$/# ͷ4QFDΛ࣮૷ͨ͠MJGFDZDMF͕࣮ߦ͞ΕΔ 5PPMT QBDL DPOUBJOFSQSPDFTT MJGFDZDMF &YFDVUF

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#VJMEQBDLMJGFDZDMF IUUQTXXXDODGJPCMPHDODGUPIPTUDMPVEOBUJWFCVJMEQBDLTJOUIFTBOECPY

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3VCZΠϝʔδΛ #VJMEͯ͠ΈΔ

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ৄղ $MPVE/BUJWF#VJMEQBDL

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֓ཁ

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ϏϧυͷྲྀΕ "QQMJDBUJPO $PEF #VJMEFS*NBHF SVCZDOC OPEFDOC 3VO*NBHF "QQMJDBUJPO $PEF SVCZMBZFS QBDLCVJME QIQDOC CVJME CVJME FYQPSU #VJMEFS*NBHFͰ"TTFUTΛ#VJME͠ɺ ࡞੒͞ΕͨMBZFSΛ3VO*NBHFʹॏͶΔ

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w ͲͷCVJMEQBDLΛ࢖͏ w ॱং͸ w CVJMEJNBHF͸ w SVOJNBHF͸ #VJMEFS*NBHFͷఆٛ

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% pack create-builder \ --builder-config builder.toml $ docker push #VJMEFSͷCVJME #VJMEFSࣗ਎΋Πϝʔδͱͯ͠  CVJMEͰ͖Δ͔ΒՄൖੑ͕ߴ͍

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#VJMEQBDLTͷ࣮ߦ SVCZDOC CJOEFUFDU CJOCVJME #VJMEQBDL಺ʹ͋ΔEFUFDU CVJME͕ MJGFDZDMF͔Β࣮ߦ͞ΕΔ QIQDOC CJOEFUFDU CJOCVJME OPEFDOC CJOEFUFDU CJOCVJME MJGFDZDMF 3VCZ͸Πϯετʔϧ͢Δʁ 1)1ίϯύΠϧ͠·͢Ͷ

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MBZFSTEJS MBZFST SVCZDOC QIQDOC #VJME*NBHFʹ૊Έࠐ·Εͨ$/#͸ MBZFSTσΟϨΫτϦΛى఺ʹ഑ஔ͞ΕΔ EFUFDU CJO EFUFDU CJO

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#VJMEFS*NBHF ಄ͷ੔ཧ MBZFST SVCZDOC QIQDOC #VJMEFS*BNBHFͷதʹ͋Δɺ MBZFSTσΟϨΫτϦʹ$/#͕഑ஔ͞Εɺ MJGFDZDMF͕ݺͼग़͢ EFUFDU CJO EFUFDU CJO MJGFDZDMF

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*OTJEF#VJMEQBDL

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%FUFDU #VJME1BDLΛϏϧυʹར༻͢Δ͔ʁ 1BTT GBJM PSFSSPS ͷΑ͏ʹ ໭Γ஋Ͱར༻Մ൱ɺΤϥʔΛฦ٫͢Δ

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%FUFDU ґଘؔ܎Λࣔͨ͢Ίʹ #VJME1MBOΛఆٛ͢Δ͜ͱ͕Ͱ͖Δ ྫCVOEMFSΛར༻͢Δʹ͸ 3VCZ͕ඞཁ [[provides]] name = "bundler" [[requires]] name = "ruby" version = "2.6.3"

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w ίϯςφΠϝʔδʹอଘ͞Ε͍ͯΔϝλσʔλ͔Βࠩ෼Λ ݕग़͠ɺݱࡏͷࢿ࢈ͱൺֱ͠ɺ#VJMEͷ࠷దԽΛߦ͏ "OBMZ[F % docker inspect | jq -r '.[].Config.Labels' # snip "buildpacks": [ { "key": "com.examples.buildpacks.ruby", "version": "0.0.1", "layers": { "ruby": { "sha": "sha256:xxxxxxxxxx", ]

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w όΠφϦɺ"TTFUTͷίϯύΠϧͳͲ w ؀ڥม਺ͷઃఆ w ىಈίϚϯυͷઃఆ #VJME

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#VJMEόΠφϦɺ"TTFUT MBZFST SVCZDOC QIQDOC 3VCZΛల։͍ͨ͠ྫ SVCZ # rubyΛμ΢ϯϩʔυ͢Δ % wget -q -O - "$ruby_url" | tar -xzf - -C "/layers/ ruby-cnb/ruby" # /layers//.toml % echo -e 'launch = true' > /layers/ruby-cnb/ruby.toml

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Launch Layers A buildpack MAY specify that a // directory is a launch layer by placing launch = true in / .toml. The lifecycle MUST include each launch layer in the built OCI image. The lifecycle MUST also store the Layer Content Metadata associated with each layer so that it can be recovered using the layer Diff ID. IUUQTHJUIVCDPNCVJMEQBDLTQFDCMPCNBTUFSCVJMEQBDLNEFOWJSPONFOU

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Build Layers A buildpack MAY specify that a // directory is a build layer by placing build = true in / .toml. The lifecycle MUST make all build layers accessible to subsequent buildpacks as described in the Environment section. IUUQTHJUIVCDPNCVJMEQBDLTQFDCMPCNBTUFSCVJMEQBDLNEFOWJSPONFOU

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#VJME؀ڥม਺ͷఆٛ IUUQTHJUIVCDPNCVJMEQBDLTQFDCMPCNBTUFSCVJMEQBDLNEFOWJSPONFOU MJGFDZDMFͷ࣮૷Ͱ؀ڥม਺͸ࣗಈఆٛ

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#VJME؀ڥม਺ͷఆٛ MBZFST SVCZDOC QIQDOC ؀ڥม਺Λ௥Ճ͍ͨ͠έʔε SVCZ % echo $PATH /layers/ruby-cnb/ruby/bin % echo $LD_LIBRARY_PATH /layers/ruby-cnb/ruby/lib % echo "/ruby/bin:" > /layers/ruby-cnb/ruby/env/PATH.append

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#VJMEىಈίϚϯυͷઃఆ ىಈ͍ͨ͠ϓϩηεΛ  MBZFSTMBVODIUPNMͱͯ͠ఆٛ [[processes]] type = "web" command = "bundle exec ruby app.rb"

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#VJMEىಈίϚϯυͷઃఆ ෳ਺ͷ$/#Λ࣮ߦ͠ಉ͡ͳΒ͹ޙউͪ [[processes]] type = "web" command = "bundle exec ruby app.rb" SVCZDOC [[processes]] type = "web" command = "npm start" OQNDOC SVCZDOCͷޙʹ OQNDOCΛ࣮ߦ ⊗ ʮOQNTUBSUʯ͕ ىಈίϚϯυͱͳΔ

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&YQPSU ݱঢ়ͷMJGFDZDMF࣮૷ͩͱ %PDLFSͷ"1*ʹґଘ͍ͯ͠Δ % docker save test-ruby-app > test-rb.tar % tar zxv test-rb.tar % cd f831edb4ae8ed... % tar zxvf layer.tar tar: Removing leading '/' from member names x workspace x workspace/Gemfile x workspace/Gemfile.lock x workspace/app.rb

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&YQPSU ࢀߟ % docker inspect test-ruby-app | jq . | grep RootFS -A10 "RootFS": { "Type": "", "Layers": [ "sha256:f831edb4ae8ed4e9c87d8ec195d98334191fd772c40d7375be1df51443dcf0df", "sha256:ce430ae9aaef0810265eb37e374ec448af547fbf0b391a3879140faaf45391fd", "sha256:0670c818350e963326b7655c0ae7fd2e2438a50a46feb2ffd9b4ae05841c1126", "sha256:b0d2839a2e054261cafa3d694db5e548342785313a282020e3b19704b8995328", "sha256:c8a8ddb80dd9923057bd12f9f69c6b093925a8925f3c37550a88b90f02699aa9", "sha256:512ae48a9f9d01cc9eb6a822660ce2cf3ad5a9c6c6fddc315cdcbb191e3b59a3" ] },

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ͪΐͬͱͩΔͦ͏ͩͱ ࢥͬͯΔਓ͍Δ͡ΌΜ͔͢ʁ

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w HJUIVCDPNCVJMEQBDLMJCCVJMEQBDL w ຊՈCVJMEQBDLͷ(PϥΠϒϥϦ w HJUIVCDPNDMPVEGPVOESZMJCCVJMEQBDL w ຊՈCVJMEQBDLΛDMPVEGPVOESZ͕8SBQ࣮ͨ͠૷ w HJUIVCDPNDMPVEGPVOESZQIQEJTUDOC w $MPVE'PVOESZ͕࣮૷͍ͯ͠Δ֤छݴޠͷ$/# #VJMEQBDLT ॆ࣮ͨ͠։ൃ؀ڥ

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MJCSBSZ͕4QFDΛӅಗͯ͘͠ΕΔ HJUIVCDPNDMPVEGPVOESZOQNDOC

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૬ޓʹґଘղܾΛߦ͍ͳ͕ΒɺΞϓ ϦέʔγϣϯΛݩʹϓϩάϥϚϒϧ ʹίϯςφΠϝʔδΛ࡞੒͢Δࣄ͕ Ͱ͖Δ ىಈίϚϯυ΍؀ڥม਺ͷఆٛ͸ UPNMͰఆΊΒΕͨϑΥʔϚοτʹ ΑͬͯఆٛͰ͖Δ ݴޠͷ$/#ͳͲ͸$MPVE'PVOESZ ͳͲͷઌߦऀ͕044ͱͯ͠ఏڙͯ͠ ͍Δ ͜͜·Ͱͷ·ͱΊ #VJMEFS*NBHF SVCZDOC OPEFDOC QIQDOC CVJME CVJME

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%PDLFSpMFͱͷҧ͍

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w 4FDVSJUZ'JYͳͲͷରԠ w #VJME"TTFUTͷྲྀ༻ੑ w #VJME؀ڥ %PDLFSpMFͱ$/#ͷൺֱ

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%PDLFSpMF w %PDLFSpMF͝ͱʹؤுΔ w #BTF*NBHFΛఆٛ͢Δ 4FDVSJUZ'JY $/# w #VJME*NBHFΛߋ৽͢Δ

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ࢄࡏ͕ͪ͠ͳ%PDLFSpMF PSHBQJ %PDLFSpMF PSHXXX %PDLFSpMF PSHJOGSB %PDLFSpMF PSHVTFS %PDLFSpMF PSHCMPH %PDLFSpMF ͢΂ͯͷ%PDLFSpMFͷߋ৽ٴͼɺ  ࣮ଶ֬ೝ͕ඞཁ

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FROM ubuntu:latest RUN apt install libssl-dev openssl %PDLFSʹ͓͚Δ#BTF*NBHFӡ༻ FYBNQMFCBTFMBUFTU FROM example/base:latest(X.X.X) RUN apt install php httpd FYBNQMFPSJHJOMBUFTU 7FSTJPOॻ͍ͪΌ͏ͱɺ CBTF͕ߋ৽͞ΕͨΒશ ෦ͷ%PDLFSpMFॻ͍ͯճ Βͳ͍ͱߦ͚ͳ͍ CBTFͰ0QFO44- ߋ৽͞Ε͚ͨͲपลϥΠϒ ϥϦಈ͘ʁ

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wΞϓϦέʔγϣϯΛݩʹɺίʔυͰϏϧυ͢Δ ͷͰϓϩάϥϚϒϧʹґଘղܾͳͲ͕ߦΘΕΔ wϏϧμʔΛߋ৽͢Ε͹ͦΕΛར༻͢ΔϦϙδτ ϦͷΠϝʔδ͸ࣗಈͰ࠷৽ʹͳΔ $/#ͳΒ͹ʁ

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%PDLFSpMF #VJMEҙࢥܾఆͷҧ͍ $/# %PDLFSpMFʹ0QFO44-Λ ࢖͏ͱॻ͘ EPDLFSCVJME˞ $/#ʹɺ؀ڥʹΑͬͯ 0QFO44-ɺΛ࢖͏  ίʔυΛॻ͘ QBDLCVJE 0QFO44-Λ࢖͏Πϝʔδ ര஀ 0QFO44-ɺͷར༻͕ΞϓϦ έʔγϣϯίʔυΛج४ͱͨ͠Ͱҙࢥ ܾఆʹΑͬͯબ͹Εͨϝʔδര஀ ˞ɹϏϧυ࣌ʹ؀ڥม਺ͳͲͰڍಈΛมߋ͢Δ͜ͱ͸΍Ζ͏ͱࢥ͑͹Ͱ͖Δ

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%PDLFSpMF w LBOJLPCVJMELJUͳͲΛར༻͠  ඇಛݖ؀ڥʹͯϏϧυͰ͖Δ #VJME؀ڥ $/# w %PDLFSσʔϞϯʹґଘ͍ͯ͠Δ  ͨΊɺಛݖ͕ඞཁ

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$/#͸தԝूݖతʹ ҙࢥܾఆͷఆٛΛߦ͍ ஗Ԇ࣮ߦͰ͖Δ͕ ಛݖ͕ࠓͷͱ͜Ζ͸ඞཁ

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(.0ϖύϘʹ͓͚Δ $/#ͷར׆༻ʹ͍ͭͯ

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w े਺ݸͷαʔϏεΛ։ൃɺӡ༻͍ͯ͠Δ w ྺ࢙తͳܦҢ΋͋Γɺ1)1ɺ3VCZɺ(PMBOH͕  ϝΠϯͷ։ൃݴޠͰɺόʔδϣϯ΋༷ʑ w ։ൃ؀ڥ͸7BHSBOU࣌ʑ%PDLFS ϖύϘͷഎܠ

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Α͋͘Δ΍ͭ

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ʮ։ൃ؀ڥ্ཱ͕͕ͪΒͳ͍Μ  Ͱ͚͢Ͳʁʯ

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CVOEMFFYFDDBQQSPEVDUJPOEFQMPZ ͕ɺͳΜ͔Τϥʔग़ͯࢭ·ΔΜͰ͚͢Ͳʁ

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৺ͷ੠

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ͦ͏͍͏ͷ͸શ෦ ,VCFSOFUFT࢖͑͹͍͍ͬͯ Ͳ͔ͬͰฉ͖·ͨ͠

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,VCFSOFUFTXJUI$/# HJUQVTI UFTUCVJME QVTIJNBHF EFQMPZJNBHF TXBQEFQMPZNFOU

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,VCFSOFUFTXJUI$/# HJUQVTI UFTUCVJME QVTIJNBHF EFQMPZJNBHF TXBQEFQMPZNFOU

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ίϚϯυͰΠϝʔδ͕ര஀ PSHBQJ QIQ PSHXXX 1)1 PSHJOGSB 1)1 PSHCMPH 1)1 % pack build --builder xxxx/tech-php-builder:0.0.1 #VJMEFS*NBHFΛϓϥΠϕʔτϨδετϦͰ؅ཧ͍ͯ͠ΔͨΊ ίϚϯυҰͭͰɺͲͷ1)1ϦϙδτϦͰ࣮ߦͯ͠΋࠷దͳΠϝʔδ͕Ͱ͖Δ

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୤ઢ 5FMFQSFTFOTF

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5FMFQSFTFOTF

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#FGPSF5FMFQSFTFOTF XXX VTFS BQJ EPDLFSDPNQPTF΍7BHSBOUΛ ར༻͠ɺϩʔΧϧͰ͢΂ͯͷؔ࿈αʔϏεΛىಈ

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"GUFS5FMFQSFTFOTF XXX VTFS BQJ ඞཁͳαʔϏε͚ͩखݩͰىಈͯ͠ɺ ࢒Γ͸,VCFSOFUFTͷϦιʔεΛ࢖͏ BQJ

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w ࠃ಺ʹ৘ใ͕গͳ͍தͰͷ$/#։ൃ w ֤ݴޠͷ࣮૷ϚδͰԶ͕΍ΔΜ͔ʁͱ͍͏ؾ࣋ͪ w $MPVE'PVOEMZ࠷ߴ ۤ࿑ͨ͜͠ͱɺͦͯ͠ݱঢ়ͱ͜Ε͔Β w ϗεςΟϯάࣄۀͷϩϦϙοϓʂͷ։ൃ؀ڥͷओཁՕॴΛ $/#ͱ,VCFSOFUFTج൫΁ ۤ࿑ͨ͠ɺ΋͏ೋ౓ͱಉ͡ࢥ͍Λͨ͘͠ͳ͍ ً͔͍͠ະདྷ w ݴޠɺ؀ڥࠩҟΛ$/#ͰຒΊɺશࣾల։΁ w ͍݁ࠗͨ͠ ݱঢ়

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$/#͕૑Δະདྷ

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,VCFSOFUFTͷొ৔ʹΑΓɺ͜Ε·ͰΠϯϑϥͱݺ͹Ε ͍ͯͨϨΠϠʔ͕Ұஈந৅Խ͞Εͨ ίϯςφͷηΩϡϦςΟɺύοέʔδɺґଘੑ؅ཧ͸  ୭͕΍Δʁ ͍ΘΏΔΠϯϑϥΤϯδχΞͷಇ͖ํ͕มԽ͢Δ͔΋͠Εͳ͍

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͍ΘΏΔΠϯϑϥΤϯδχΞͷಇ͖ํ͕มԽ͢Δ͔΋͠Εͳ͍ ΞϓϦέʔγϣϯΤϯδχΞ ϓϥοτϑΥʔϜΤϯδχΞ ΞϓϦέʔγϣϯ։ൃʹ੹຿Λෛ ͍ɺ༏ΕͨΞϓϦέʔγϣϯΛ  ։ൃ͢Δ ΞϓϦέʔγϣϯ͕ಈ͘؀ڥͷ։ൃ ӡ༻ʹ੹຿Λෛ͍ɺՄ༻ੑͷߴ͍  ؀ڥΛఏڙ͢Δ

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