Zenn
Open4

docker container

Docker
#
Dockerfile
#
Docker Hub
Teru roomTeru room

イメージの作成

  • harl@macMini dev % ls -l 
total 0
drwxr-xr-x  3 sharl  staff   96  9 15 01:34 deno
drwxr-xr-x  3 sharl  staff   96  8 20 16:40 go
drwxr-xr-x  4 sharl  staff  128  8 23 01:50 grpc
drwxr-xr-x  2 sharl  staff   64 10  1 07:53 python
drwxr-xr-x  3 sharl  staff   96  9 11 21:48 svelte
  • sharl@macMini dev % mkdir docker;cd docker
  • sharl@macMini docker % mkdir hello
  • sharl@macMini docker % vim ./hello/hello.sh 
#!/bin/sh

set -eu -o pipefail

echo "Hello, World"
  • sharl@macMini docker % vim ./hello/Dockerfile 
FROM busybox:1.35
COPY ./hello.sh /
RUN chmod u+x /hello.sh
ENTRYPOINT /hello.sh
  • sharl@macMini docker % docker build -t hello hello
    • docker build -t 生成するイメージ名 Dockerfileがあるフォルダのパス
実行結果
[+] Building 4.4s (9/9) FINISHED                                                                                     docker:desktop-linux
 => [internal] load build definition from Dockerfile                                                                                 0.0s
 => => transferring dockerfile: 118B                                                                                                 0.0s
 => [internal] load .dockerignore                                                                                                    0.0s
 => => transferring context: 2B                                                                                                      0.0s
 => [internal] load metadata for docker.io/library/busybox:1.35                                                                      3.3s
 => [auth] library/busybox:pull token for registry-1.docker.io                                                                       0.0s
 => [internal] load build context                                                                                                    0.0s
 => => transferring context: 87B                                                                                                     0.0s
 => [1/3] FROM docker.io/library/busybox:1.35@sha256:7ae8447f3a7f5bccaa765926f25fc038e425cf1b2be6748727bbea9a13102094                1.0s
 => => resolve docker.io/library/busybox:1.35@sha256:7ae8447f3a7f5bccaa765926f25fc038e425cf1b2be6748727bbea9a13102094                0.0s
 => => sha256:8efa25f4ef5cee067469977d319254414c5292cb3dc62e9f178df1465753a5e4 1.91MB / 1.91MB                                       0.9s
 => => sha256:7ae8447f3a7f5bccaa765926f25fc038e425cf1b2be6748727bbea9a13102094 2.29kB / 2.29kB                                       0.0s
 => => sha256:8cd9c953d2a64decb75ca46b4cf22f6e2e3cd3ea8ab1257236a0c29ed3f7d2c1 528B / 528B                                           0.0s
 => => sha256:cb300da5c300405b14faed616992ef14a76c344eb4d7cc318606f4937565a1d6 1.47kB / 1.47kB                                       0.0s
 => => extracting sha256:8efa25f4ef5cee067469977d319254414c5292cb3dc62e9f178df1465753a5e4                                            0.1s
 => [2/3] COPY ./hello.sh /                                                                                                          0.0s
 => [3/3] RUN chmod u+x /hello.sh                                                                                                    0.1s
 => exporting to image                                                                                                               0.0s
 => => exporting layers                                                                                                              0.0s
 => => writing image sha256:ed0de5516d2d5bf3a29ffc35d012f832e11200bc185aecdd167da93192e5ea3c                                         0.0s
 => => naming to docker.io/library/hello                                                                                             0.0s

What's Next?
  View a summary of image vulnerabilities and recommendations → docker scout quickview
Teru roomTeru room
  • sharl@macMini docker % docker login -u teruroomuser
  • Password: himitsu 
Login Succeeded
  • sharl@macMini docker % docker tag hello teruroomuser/hello:v1
  • sharl@macMini docker % docker push teruroomuser/hello:v1
実行結果
The push refers to repository [docker.io/teruroomuser/hello]
bc97656f038d: Pushed 
db77520ca0aa: Pushed 
115566417e3e: Mounted from library/busybox 
v1: digest: sha256:2219c93fd64b74ab28fe659e8e2962faa46ad24684b9ac7353bfbb8a851d5807 size: 942
  • sharl@macMini docker % docker pull teruroomuser/hello:v1
実行結果
v1: Pulling from teruroom11/hello
Digest: sha256:2219c93fd64b74ab28fe659e8e2962faa46ad24684b9ac7353bfbb8a851d5807
Status: Image is up to date for teruroom11/hello:v1
docker.io/teruroom11/hello:v1

What's Next?
  View a summary of image vulnerabilities and recommendations → docker scout quickview teruroom11/hello:v1
  • sharl@macMini docker % docker run teruroomuser/hello:v1 
Hello, World
Teru roomTeru room

イメージの配布

  • sharl@macMini docker % docker login -u teruroom11
  • Password: password 
Login Succeeded
  • sharl@macMini docker % docker tag hello teruroom11/hello:v1
  • sharl@macMini docker % docker images 
REPOSITORY         TAG       IMAGE ID       CREATED        SIZE
hello              latest    ed0de5516d2d   7 days ago     4.04MB
teruroom11/hello   v1        ed0de5516d2d   7 days ago     4.04MB
  • sharl@macMini docker % docker push teruroom11/hello:v1
実行結果
The push refers to repository [docker.io/teruroom11/hello]
bc97656f038d: Pushed 
db77520ca0aa: Pushed 
115566417e3e: Mounted from library/busybox 
v1: digest: sha256:2219c93fd64b74ab28fe659e8e2962faa46ad24684b9ac7353bfbb8a851d5807 size: 942
  • sharl@macMini docker % docker pull teruroom11/hello:v1
実行結果
v1: Pulling from teruroom11/hello
Digest: sha256:2219c93fd64b74ab28fe659e8e2962faa46ad24684b9ac7353bfbb8a851d5807
Status: Image is up to date for teruroom11/hello:v1
docker.io/teruroom11/hello:v1

What's Next?
  View a summary of image vulnerabilities and recommendations → docker scout quickview teruroom11/hello:v1
  • sharl@macMini docker % docker run teruroom11/hello:v1 
Hello, World
Teru roomTeru room

イメージの実行

  • sharl@macMini docker % docker run hello 
Hello, World
  • sharl@macMini docker % docker run -it --entrypoint=/bin/sh hello
  • / # ps auxww 
PID   USER     TIME  COMMAND
    1 root      0:00 /bin/sh
    7 root      0:00 ps auxww
  • / # ls / 
bin       dev       etc       hello.sh  home      lib       lib64     proc      root      sys       tmp       usr       var
  • / # exit