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Recommend: Cacheful Docker Image
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Hurry
December 10, 2018
Technology
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Recommend: Cacheful Docker Image
Hurry
December 10, 2018
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Transcript
Recommend : Cacheful Docker Image Container SIG Meet-up 2018 Fall
@hurry_41 Kansai University Graduate School
ࣗݾհͱܦҢઆ໌
ॴଐ : ؔେֶ େֶӃ M1 Kyeord : ηΩϡϦςΟ,ϥϯαϜΣΞ,Ϋϥυ… Hurry (ຏঘر)
͜ͷՆ Πϯλʔϯγοϓʹ ߦ͖ͬͯ·ͨ͠
Recruit Internship for Specialist 2018 - ENGINEER -
ࡐ
Docker run ͢Δ͜ͱͳ͘ ImageΛ੬ऑੑݕ͍ࠪͨ͠
→ docker run ࣌ͷFSߏͷ࠶ݱ
DockerΛͬͨ͜ͱͷͳֶ͍ੜ͕ 10ӦۀDocker Image ʹ͍ͭͯௐࠪ͠·ͨ͠
ࠓճͷLT ɿ Πϯλʔϯੜ׆ͷ෭࢈
एഐऀͰ͕͢ɺ ΑΖ͓͘͠Ͷ͕͍͠·͢
վΊ·ͯ͠
Recommend : Cacheful Docker Image Container SIG Meet-up 2018 Fall
͜Μͯͳྺ 1ϲ݄ͷ͔͋ͪΌΜ
RUN ·ͱΊͯ·͔͢ʁ
Docker Image ϨΠϠߏ
RUNͷݮ = ϨΠϠͷݮ
= ΠϝʔδαΠζͷݮ
RUNΛ͚Δͱ redisͷΠϯετʔϧ
ΠϝʔδαΠζɿ244MB ※WORKDIRϨΠϠΛ࡞Γ·ͤΜ
RUNΛ·ͱΊΔͱ redisͷΠϯετʔϧ
ΠϝʔδαΠζɿ131MB
ͳΜͰRUNΛ·ͱΊΕOKʁ
NO
ͨͱ͑
td-agent Ұ෦ൈਮ
td-agent Ұ෦ൈਮ มߋʹͳͬͨͱ͢Δ
td-agent Ұ෦ൈਮ ΩϟογϡࡁΈ
td-agent Ұ෦ൈਮ ͔͜͜ΒBuild ↓
td-agent Ұ෦ൈਮ RUN Λ·ͱΊͯΈΔ
td-agent Ұ෦ൈਮ RUN Λ·ͱΊͯΈΔ มߋʹͳͬͨͱ͢Δ
td-agent Ұ෦ൈਮ ͔͜͜ΒBuild ↓
ΠϝʔδαΠζͲͪΒಉ͡
దʹ·ͱΊ͍ͨ
Ͳ͏ఆ͢Δʁ
docker history?
docker history?
ϨΠϠΛ·ͱΊͯຊʹޮԽ͢Δͷ͔ෆ໌
ώϡʔϦεςΟοΫͳܦݧଇ
ɾύοέʔδΠϯετʔϧͱΩϟογϡআΛ·ͱΊΔ ɾϑΝΠϧͷଐੑมߋ·ͱΊΔ ɾADD,COPY,RUNҎ֎·ͱΊΔඞཁ͕ͳ͍
ؾ͔ͮ͵͏ͪʹଞϨΠϠͷϑΝΠϧΛ ৮ͬͯ͠·ͬͯΔ͜ͱ
ϨΠϠؒͷॏෳϑΝΠϧΛݕ͍ͨ͠
ɾmanifest.json ɾConfig.json ɾlayer.tar Πϝʔδͷ੩తղੳ
ɾॏෳϑΝΠϧ ɿ ্ॻ͖ ɾ.wh.ϑΝΠϧ໊ ɿ আ(ԼҐσΟϨΫτϦআ) ɾ.wh..wh..opq ɿ ԼҐϨΠϠʹͯσΟϨΫτϦΛ ࠶ؼతʹḷΒͳ͍
ϗϫΠτΞτ
None
ৄ͘͠ ɾ Image Specification v1.2.0 ɾmoby/pkg/archive/whiteouts.go
πʔϧΛ࡞Γ·ͨ͠ https://github.com/recruit- tech/duplayer
None
None
ɾ·ͱΊͨࡍͷݮαΠζɾϑΝΠϧΛදࣔ ɾॏෳϑΝΠϧΛαΠζॱʹදࣔ ϨΠϠؒͰ
ػೳతʹ্ҐޓͰ͋Δ diveΛ͍·͠ΐ͏