1. 도커 이미지 확인합니다.

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$ docker images
REPOSITORY                  TAG                 IMAGE ID            CREATED             SIZE
base_image                  1.0                 f592a52fa392        38 minutes ago      722MB
mysql                       5.7                 5fac85ee2c68        2 weeks ago         408MB
ubuntu                      latest              747cb2d60bbe        3 weeks ago         122MB
tomcat                      8                   1269f3761db5        3 weeks ago         560MB
tomcat                      8.5                 1269f3761db5        3 weeks ago         560MB
redis                       latest              1fb7b6c8c0d0        3 weeks ago         107MB
centos                      latest              196e0ce0c9fb        6 weeks ago         197MB
hello-world                 latest              05a3bd381fc2        7 weeks ago         1.84kB
teamlab/pydata-tensorflow   0.1                 7bdf5d7e0191        15 months ago       3.08GB
 
cs



2. 도커 컨테이너 목록을 확인합니다.

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$ docker ps -a
CONTAINER ID        IMAGE                           COMMAND                  CREATED             STATUS                        PORTS                    NAMES
6cbd98f64315        tomcat:8.5                      "catalina.sh run"        29 minutes ago      Up 29 minutes                 0.0.0.0:8081->8080/tcp   tomcat8-board
9c45541de0f7        centos:latest                   "/bin/bash"              About an hour ago   Exited (127) 40 minutes ago                            test
9ee69b720f7a        hello-world                     "/hello"                 3 days ago          Exited (0) 3 days ago                                  stupefied_mahavira
f5ee9e7b31a4        teamlab/pydata-tensorflow:0.1   "/opt/start"             3 days ago          Created                                                quirky_jones
23b119d646f9        teamlab/pydata-tensorflow:0.1   "/opt/start"             3 days ago          Exited (137) 3 days ago                                fervent_fermi
c8114d22183d        mysql:5.7                       "docker-entrypoint..."   3 days ago          Exited (0) 2 days ago                                  mysql
 
cs

* 현재 tomcat:8.5 컨테이너가 실행 중인 상태이므로 접속을 진행해보겠습니다.



3. 아래와 같이 docker exec 명령어를 통해 tomcat 컨테이너에 접속을 하였습니다.

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$ docker exec -i -t 6cbd /bin/bash
root@6cbd98f64315:/usr/local/tomcat#
 
cs

* 이외에 컨테이너 접속 방법도 동일하거나 비슷합니다.

* 6cbd 는 tomcat:8.5 컨테이너 ID 로 다른 컨테이너 ID 와 중복되지 않을 경우 전체 길이를 입력하지 않아도 됩니다.



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