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Multi-stage Builds Patterns & Practice
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orisano
November 21, 2018
Technology
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Multi-stage Builds Patterns & Practice
orisano
November 21, 2018
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Transcript
Multi-stage Builds Patterns & Practice Docker Meetup Tokyo #26 #dockertokyo
@orisano
ࣗݾհ • @orisano • ۦ͚ग़͠ͷΞϓϦέʔγϣϯΤϯδχΞ • ޮతͳdocker buildΛࢦͯ͠ؤு͍ͬͯΔ
օ͞Μ Multi-stage Builds ͯ͠·͔͢ʁ
ͦͦ Multi-stage Builds ͱ
Docker 17.05 (2017-05-04) ͔Βೖͬͨػೳ
Docker 17.05 (2017-05-04) ͔Βೖͬͨػೳ
എܠ
ͦͦ push͢ΔΠϝʔδΛ খ͍ͨ͘͞͠
Multi-stage BuildsҎલ
build༻ͷDockerfileΛͬͯ buildͯ͠volume͔Β ՌΛऔΓग़͢
Ұ࿈ͷྲྀΕΛ shell scriptͰॻ͍͍ͯͨ $ ./build.sh
͜ΕΛDockerfileͷΈͰ ࣮ݱͰ͖ΔΑ͏ʹͳͬͨ
ෳͷFROM COPY —from ͰͷผΠϝʔδ͔Βͷίϐʔ
্ͷΑ͏ͳഎܠͰՃ͞Εͨ Multi-stage Builds
͑Δͷ͏ͷ͕ਓؒ
͍ΖΜͳ׆༻ํ๏͕͋Δ
https://medium.com/@tonistiigi/advanced- multi-stage-build-patterns-6f741b852fae
https://speakerdeck.com/ garethr/advanced-docker- image-build-patterns (2019-11-01 Velocity)
Multi-stage Builds Patterns
builder & app alias image tested app inner base image
split step
builder & app alias image tested app inner base image
split step
None
#VJMEFS "QQ
builder & app alias image tested app inner base image
split step
None
base imageΛ ໌ࣔతʹڞ௨ԽͰ͖Δ
builder & app alias image tested app inner base image
split step
None
#VJMEFS "QQ 5FTU
None
#VJMEFS "QQ 5FTU
builder & app alias image tested app inner base image
split step
None
#BTF "QQ "QQ
builder & app alias image tested app inner base image
split step
None
'BU#VJMEFS "QQ
#VJMEFS "QQ 7FOEPS )FBWZ )FBWZ
cacheΛ࠷େݶ׆༻Ͱ͖Δ
Multi-stage Builds buildkitͱ૬ੑ͕ྑ͍
ฒྻbuildʹΑΔ ߴԽ͕ݟࠐΊΔʂ
Multi-stage builds࠷ߴʂ
͔͠͠
buildkit͡Όͳ͍ͱਏ͍
CIbuildkit ͑ͳ͔ͬͨΓ͢Δ
CI্ͷ Multi-stage Buildsͷ cacheઓུ
͜Ε·ͰͷΓํͩͱ খ͍͞ΠϝʔδͷcacheΛ ͯ͠͠·͏
ຊʹඞཁͳͷ ॏ͍Πϝʔδͷcache
CIʹ͓͚Δ Multi-stage Builds ΄΅ͯ͢ͷεςʔδΛ ໌ࣔతʹbuild͢Δ͔͠ͳ͍
ͦͷ্Ͱ Ͳ͏͍͏ઓུΛऔΔ͔
save & load Or push & pull + —cache-from
save & load ͷ߹
Pros ֎෦ʹstorage͕͋Ε ࣮ݱՄೳ ϑΝΠϧड͚͠ͷΈͰྑ͍
Cons αΠζ͕Ͱ͔͍ ಉ͡ϕʔεΠϝʔδͰॏෳ save͕ͳΜ͔ॏ͍
push & pull ͷ߹
Pros Registry͕͋ΕՄೳ ѹॖ͞Εͨঢ়ଶͰड͚͠ ϕʔεΠϝʔδ͕ॏෳ͠ͳ͍
Cons cache༻tag or image͕ඞཁ push & pullͷෛՙ
ͿͬͪΌ͚ݱঢ়Ͱ CI্ͷcache͕໘ष͗͢Δ
CIͰ cacheΛޮ͔͍ͤͨͳΒ 2 stage·Ͱ (ݸਓͷײͰ͢)
CIͱͷ૬ੑ͋Δ͕ pipeline͕ෳࡶʹͳͬͨΓ ࣮ͦͦݱͰ͖ͳ͔ͬͨΓ
Multi-stage Buildsͷ͍ॴ
buildΑΓpullͷ΄͏͕ଟ͍ dockerd͕มΘΒͳ͍ڥ खݩͰͷbuildޮΛ࠷େԽ
CI͖Ͱͳ͍
ͦΕͰΓ͍ͨਓͷͨΊʹ
࡞Γ·ͨ͠ orisano/castage
None
DockerfileΛಡΜͰ͖ͯ ͯ͢ͷεςʔδΛநग़ pull ͱ cache-fromΛ ࣗಈੜͯ͘͠ΕΔ
None
None
͜Ε͚ͩͰղܾ͠ͳ͍
dockerdͱbuildkit —cache-from ͷڍಈ͕ҧ͏
ͳ͍߹ ແࢹͯ͘͠Εͨ΄͏͕خ͍͠
ॳظΠϝʔδ͕ͳ͍࣌ ͚ͩpipelineΛม͑Δͷਏ͍
݁
CIʹ͓͚Δ Multi-stage Builds͍͠