docker 로 ubuntu IMG 를 받아서 NGINX 설치하기

[shimguh]

1. 각자 REPO 에 ubuntu-nginx 를 생성
2. hub 에서 ubuntu pull & run
3. (2) 에 들어가서 nginx.org 참조하여 nginx 설치
4. (1), (2), (3) 과정 기록
5. (4) 의 기록을 바탕으로 Dockerfile 생성
   ref
   A. https://nginx.org/en/docs/
   B. https://nginx.org/en/docs/beginners_guide.html
   C. https://docs.docker.com/engine/reference/builder/#dockerfile-reference
   D. https://github.com/nginxinc/docker-nginx/blob/1f227619c1f1baa0bed8bed844ea614437ff14fb/mainline/debian/Dockerfile#L119

[shimguh]

1. rm, rmi

$ sudo docker images
REPOSITORY   TAG       IMAGE ID       CREATED       SIZE
$ sudo docker ps -a
CONTAINER ID   IMAGE     COMMAND   CREATED   STATUS    PORTS     NAMES

[shimguh]

2. pull, run

$ sudo docker pull ubuntu:22.04
$ sudo docker images
REPOSITORY   TAG       IMAGE ID       CREATED       SIZE
ubuntu       22.04     fd1d8f58e8ae   2 weeks ago   77.9MB

$ sudo docker run -itd --name ubuntu-nginx ubuntu:22.04
$ sudo docker ps
CONTAINER ID   IMAGE          COMMAND       CREATED          STATUS         PORTS     NAMES
844cb6901cb9   ubuntu:22.04   "/bin/bash"   32 seconds ago   Up 4 seconds             ubuntu-nginx

[shimguh]

3. install nginx

$ sudo docker exec -it ubuntu-nginx bash
$ apt-get update
$ apt-get install nginx

[shimguh]

4. Dockerfile 생성
   Dockerfil install nginx 오류 #2 (comment)

$ cat Dokcerfile
FROM ubuntu:22.04
RUN apt-get update
RUN apt-get install -y nginx
EXPOSE 80
CMD ["nginx" ,"-g", "daemon off";]

$ sudo docker build -t test .
[+] Building 8.2s (7/7) FINISHED                                           docker:default
 => [internal] load build definition from Dockerfile                                 0.0s
 => => transferring dockerfile: 147B                                                 0.0s
 => [internal] load metadata for docker.io/library/ubuntu:22.04                      0.0s
 => [internal] load .dockerignore                                                    0.0s
 => => transferring context: 2B                                                      0.0s
 => [1/3] FROM docker.io/library/ubuntu:22.04                                        0.0s
 => CACHED [2/3] RUN apt-get update                                                  0.0s
 => [3/3] RUN apt-get install -y nginx                                               8.1s
 => exporting to image                                                               0.2s
 => => exporting layers                                                              0.1s
 => => writing image sha256:50273b2ec7cf128f853123a3e86ca914a2d3268eeed8eefa9dfd679  0.0s
 => => naming to docker.io/library/test                                              0.0s

$ sudo docker images
REPOSITORY   TAG       IMAGE ID       CREATED         SIZE
test         latest    50273b2ec7cf   4 seconds ago   182MB