Dockerfileを素早く書くtips＆ライブデモ

2016/10/21 JX通信社の社内勉強会で話した内容です

Transcript

1. @yamitzky %PDLFSpMFΛ
   ૉૣ͘࡞Δ
 UJQTˍϥΠϒσϞ 2016/10/21 JXࣾ಺ษڧձ
2. w ࣗ෼͕%PDLFSpMFΛॻ͘ͱ͖ʹɺ
 Ͳ͏͍͏؀ڥͰॻ͍͍ͯΔ͔Λڞ༗ˍσϞ͠·͢
   w ʮ͜͏͢Δͱ΋ͬͱޮ཰ྑ͍ΑʂʯͳͲ͋ͬͨΒ
 ϚαΧϦ͓ئ͍͠·͢ Today…
3. w ίϯςφܕͷԾ૝Խ؀ڥΛఏڙ͢Δ044
   w %PDLFSpMFʹΑͬͯ%PDLFSΠϝʔδΛఆٛͰ͖Δ
   w Ϗϧυͨ͠%PDLFSΠϝʔδ͸%PDLFS
   3FHJTUSZͰެ։Ͱ͖ɺ
 ଞͷ؀ڥͰ΋࢖͑ΔΑ͏ʹڞ༗Ͱ͖Δ What is Docker? %PDLFSpMFΛॻ͍ͯɺ
   ΞϓϦέʔγϣϯΛ୭Ͱ΋࢖͑ΔΑ͏ʹ͠Α͏ʂ
4. w ࠷ۙࣗ෼͕ॻ͍ͨ%PDLFSpMF
   w EPDLFSDPNQPTF
   w BQFY
   w NFDBC
   w +6."/
   w FUDʜ Recently… %PDLFSΠϝʔδΛڞ༗͢Ε͹
 AEPDLFS
   SVOA
   ͚ͩͰ.BDͰ΋8JOEPXTͰ΋-JOVYͰ΋
   ར༻Ͱ͖ΔΑ͏ʹʂ
5. #BE
   1SBDUJDF
   
6. Bad Practice to Write Dockerfile $ 5FSNJOBM
7. Bad Practice to Write Dockerfile $ vim Dockerfile 0QFO
   FEJUPS
8. Bad Practice to Write Dockerfile FROM alpine RUN apk add —no-cache curl RUN command to take long time RUN some typo command 8SJUF
   %PDLFSpMF
9. Bad Practice to Write Dockerfile $ docker build . #VJME
   %PDLFS
   JNBHF
   BOE
   XBJUʜ ... (wait for 10 min)
10. Bad Practice to Write Dockerfile $ docker build . &SSPS ... ... /bin/sh: typo: not found The command '/bin/sh -c typo' returned a non-zero code: 127
12. Bad Iteration $ build ☕ 8SJUF #VJME
    
    8BJU &SSPS
13. #FTU
    1SBDUJDF
    
14. Best Practice to Write Dockerfile 5NVYɺ7JNɺ4MJNFΛ࢖ͬͯ
    Ұߦͣͭ%PDLFSpMFΛ͔֬ΊΔ Ҏ্ɻ
15. %&.0
16. Best Practice to Write Dockerfile $ 3VO
    UNVY
    
    TQMJU
    QBOF $
17. Best Practice to Write Dockerfile $ vim Dockerfile $ docker run -it alpine /bin/sh &EJU
    %PDLFSpMF 3VO
    CBTF
    JNBHF`T
    TIFMM
18. Best Practice to Write Dockerfile / # 8SJUF
    KVTU
    POF
    MJOF FROM alpine RUN apk add —no-cache curl 4IFMM
    JT
    SVOOJOH
19. Best Practice to Write Dockerfile / # apk add —no-cache curl &YFDVUF
    POF
    MJOF
    WJB
    4-*.& FROM alpine RUN apk add —no-cache curl
20. w ʮWJN
    TMJNFʯͱ͔ʮFNBDT
    TMJNFʯͰݕࡧʂ
    w ΤσΟλʔͷબ୒෦෼ΛɺUNVYͷผQBOFʹૹΓɺ
 ࣮ߦͰ͖ΔϓϥάΠϯ
 Slime? IUUQTHJUIVCDPNKQBMBSEZWJNTMJNF
21. Best Practice to Write Dockerfile / # apk add —no-cache curl &YFDVUF
    POF
    MJOF
    WJB
    4-*.& FROM alpine RUN apk add —no-cache curl
22. / # some command Best Practice to Write Dockerfile / # apk add —no-cache curl … &YFDVUF
    POF
    MJOF
    WJB
    4-*.& FROM alpine RUN apk add —no-cache curl RUN some command
23. / # some command … Best Practice to Write Dockerfile / # apk add —no-cache curl … &YFDVUF
    POF
    MJOF
    WJB
    4-*.& FROM alpine RUN apk add —no-cache curl RUN some command RUN other command / # other command
24. Finally… $ docker build . 4BWF
    
    CVJME
    JU $ ... ... Successfully built
25. w UNVYͱWJNͱTMJNFΛ༻ҙ͢Δ
    w ҰߦͣͭTMJNFͰ࣮ߦ͔ͯ͠Βɺ࠷ޙʹAEPDLFS
    CVJMEA
    w λʔϛφϧʹ̍ߦͣͭίʔυΛૹΕΕ͹ԿͰ΋ྑ͍Αʂ
 ྫɿFNBDT
    TMJNFͱ͔JOUFMMJ+ͱ͔ Conclusion