Multi-stage Builds Patterns & Practice

Transcript

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   Multi-stage Builds Patterns & Practice Docker Meetup Tokyo #26 #dockertokyo

   @orisano
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   ࣗݾ঺հ • @orisano • ۦ͚ग़͠ͷΞϓϦέʔγϣϯΤϯδχΞ • ޮ཰తͳdocker buildΛ໨ࢦͯ͠ؤு͍ͬͯΔ

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   օ͞Μ Multi-stage Builds ͯ͠·͔͢ʁ

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   ͦ΋ͦ΋ Multi-stage Builds ͱ͸

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   Docker 17.05 (2017-05-04) ͔Βೖͬͨػೳ

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   Docker 17.05 (2017-05-04) ͔Βೖͬͨػೳ

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   എܠ

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   ͦ΋ͦ΋ push͢ΔΠϝʔδΛ খ͍ͨ͘͞͠

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   Multi-stage BuildsҎલ

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    build༻ͷDockerfileΛ࢖ͬͯ buildͯ͠volume͔Β ੒Ռ෺ΛऔΓग़͢

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    Ұ࿈ͷྲྀΕΛ shell scriptͰॻ͍͍ͯͨ $ ./build.sh

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    ͜ΕΛDockerfileͷΈͰ ࣮ݱͰ͖ΔΑ͏ʹͳͬͨ

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    ෳ਺ͷFROM COPY —from ͰͷผΠϝʔδ͔Βͷίϐʔ

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    ্ͷΑ͏ͳഎܠͰ௥Ճ͞Εͨ Multi-stage Builds

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    ࢖͑Δ΋ͷ͸࢖͏ͷ͕ਓؒ

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    ͍ΖΜͳ׆༻ํ๏͕͋Δ

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    https://medium.com/@tonistiigi/advanced- multi-stage-build-patterns-6f741b852fae

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    https://speakerdeck.com/ garethr/advanced-docker- image-build-patterns (2019-11-01 Velocity)

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    Multi-stage Builds Patterns

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    builder & app alias image tested app inner base image

    split step
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    builder & app alias image tested app inner base image

    split step
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    None
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    #VJMEFS "QQ

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    builder & app alias image tested app inner base image

    split step
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    None
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    base imageΛ ໌ࣔతʹڞ௨ԽͰ͖Δ

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    builder & app alias image tested app inner base image

    split step
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    None
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    #VJMEFS "QQ 5FTU

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    None
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    #VJMEFS "QQ 5FTU

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    builder & app alias image tested app inner base image

    split step
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    None
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    #BTF "QQ "QQ

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    builder & app alias image tested app inner base image

    split step
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    None
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    'BU
    #VJMEFS "QQ

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    #VJMEFS "QQ 7FOEPS )FBWZ )FBWZ

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    cacheΛ࠷େݶ׆༻Ͱ͖Δ

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    Multi-stage Builds͸ buildkitͱ૬ੑ͕ྑ͍

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    ฒྻbuildʹΑΔ ߴ଎Խ͕ݟࠐΊΔʂ

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    Multi-stage builds͸࠷ߴʂ

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    ͔͠͠

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    buildkit͡Όͳ͍ͱਏ͍

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    CI͸buildkit ࢖͑ͳ͔ͬͨΓ͢Δ

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    CI্ͷ Multi-stage Buildsͷ cacheઓུ

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    ͜Ε·Ͱͷ΍Γํͩͱ খ͍͞ΠϝʔδͷcacheΛ ͯ͠͠·͏

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    ຊ౰ʹඞཁͳͷ͸ ॏ͍Πϝʔδͷcache

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    CIʹ͓͚Δ Multi-stage Builds͸ ΄΅͢΂ͯͷεςʔδΛ ໌ࣔతʹbuild͢Δ͔͠ͳ͍

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    ͦͷ্Ͱ Ͳ͏͍͏ઓུΛऔΔ͔

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    save & load Or push & pull + —cache-from

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    save & load ͷ৔߹

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    Pros ֎෦ʹstorage͕͋Ε͹ ࣮ݱՄೳ ϑΝΠϧड͚౉͠ͷΈͰྑ͍

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    Cons αΠζ͕Ͱ͔͍ ಉ͡ϕʔεΠϝʔδͰ΋ॏෳ save͕ͳΜ͔ॏ͍

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    push & pull ͷ৔߹

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    Pros Registry͕͋Ε͹Մೳ ѹॖ͞Εͨঢ়ଶͰड͚౉͠ ϕʔεΠϝʔδ͕ॏෳ͠ͳ͍

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    Cons cache༻tag or image͕ඞཁ push & pullͷෛՙ

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    ͿͬͪΌ͚ݱঢ়Ͱ͸ CI্ͷcache͕໘౗ष͗͢Δ

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    CIͰ cacheΛޮ͔͍ͤͨͳΒ 2 stage·Ͱ (ݸਓͷײ૝Ͱ͢)

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    CIͱͷ૬ੑ΋͋Δ͕ pipeline͕ෳࡶʹͳͬͨΓ ͦ΋ͦ΋࣮ݱͰ͖ͳ͔ͬͨΓ

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    Multi-stage Buildsͷ࢖͍ॴ

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    buildΑΓpullͷ΄͏͕ଟ͍ dockerd͕มΘΒͳ͍؀ڥ खݩͰͷbuildޮ཰Λ࠷େԽ

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    CI޲͖Ͱ͸ͳ͍

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    ͦΕͰ΋΍Γ͍ͨਓͷͨΊʹ

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    ࡞Γ·ͨ͠ orisano/castage

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    None
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    DockerfileΛಡΜͰ͖ͯ ͢΂ͯͷεςʔδΛநग़ pull ͱ cache-fromΛ ࣗಈੜ੒ͯ͘͠ΕΔ

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    None
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    None
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    ͜Ε͚ͩͰ͸ղܾ͠ͳ͍

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    dockerdͱbuildkit —cache-from ͷڍಈ͕ҧ͏

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    ͳ͍৔߹͸ ແࢹͯ͘͠Εͨ΄͏͕خ͍͠

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    ॳظΠϝʔδ͕ͳ͍࣌ ͚ͩpipelineΛม͑Δͷਏ͍

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    ݁࿦

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    CIʹ͓͚Δ Multi-stage Builds͸೉͍͠