[root@master jalchu]# sudo yum install -y yum-utils

[root@master jalchu]# sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

[root@master jalchu]# sudo yum-config-manager --enable docker-ce-nightly

[root@master jalchu]# sudo yum-config-manager --enable docker-ce-test

[root@master jalchu]# sudo yum install docker-ce docker-ce-cli containerd.io

[root@master jalchu]# sudo systemctl enable docker

[root@master jalchu]# sudo systemctl start docker

[root@master jalchu]# sudo docker run hello-world

[root@master docker]# docker pull mysql:5.6

[root@master docker]# docker run -p 3306:3306 --name mymysql -v /home/mysql/data:/var/lib/mysql -e MYSQL_ROOT_PASSWORD=123456 -d mysql:5.6

[root@master docker]# docker ps

CONTAINER ID   IMAGE       COMMAND                  CREATED         STATUS         PORTS                                       NAMES

13d593602133   mysql:5.6   "docker-entrypoint.s…"   5 minutes ago   Up 5 minutes   0.0.0.0:3306->3306/tcp, :::3306->3306/tcp   mymysql

[root@master docker]# docker exec -it 13d593602133 /bin/bash

root@13d593602133:/# mysql -uroot -p

root@13d593602133:/# exit

[root@master docker]# docker images

REPOSITORY    TAG       IMAGE ID       CREATED        SIZE

mysql         5.6       eb0e825dc3cf   6 days ago     303MB

hello-world   latest    d1165f221234   4 months ago   13.3kB

[root@master docker]# docker ps

CONTAINER ID   IMAGE       COMMAND                  CREATED          STATUS          PORTS                                       NAMES

13d593602133   mysql:5.6   "docker-entrypoint.s…"   26 minutes ago   Up 26 minutes   0.0.0.0:3306->3306/tcp, :::3306->3306/tcp   mymysql

[root@master docker]# docker logs -f 13d593602133

[root@master docker]# docker login

Login with your Docker ID to push and pull images from Docker Hub. If you don't have a Docker ID, head over to https://hub.docker.com to create one.

Username: chumingcheng

Password: 

WARNING! Your password will be stored unencrypted in /root/.docker/config.json.

Configure a credential helper to remove this warning. See

https://docs.docker.com/engine/reference/commandline/login/#credentials-store

Login Succeeded

[root@master k8s]# git clone https://github.com/cloudnativedevops/demo.git

[root@master k8s]# cd demo-master/hello

[root@master hello]# ls

Dockerfile  go.mod  main.go  README.md

[root@master hello]# cat Dockerfile 

FROM golang:1.14-alpine AS build

WORKDIR /src/

COPY main.go go.* /src/

RUN CGO_ENABLED=0 go build -o /bin/demo

FROM scratch

COPY --from=build /bin/demo /bin/demo

ENTRYPOINT ["/bin/demo"]

[root@master hello]# docker image build -t myhello .

Sending build context to Docker daemon  11.78kB

Step 1/7 : FROM golang:1.14-alpine AS build

1.14-alpine: Pulling from library/golang

4c0d98bf9879: Pull complete 

9e181322f1e7: Pull complete 

6422294da7d3: Pull complete 

eb57f1833670: Pull complete 

bd57f1a80d4e: Pull complete 

Digest: sha256:e196a762bd349b188d66c539354fc23f0e5a0178c214e6dfe4d7894c3c2753f1

Status: Downloaded newer image for golang:1.14-alpine

 ---> 32dc91e030ac

Step 2/7 : WORKDIR /src/

 ---> Running in c8068f810890

Removing intermediate container c8068f810890

 ---> c738c5e990ae

Step 3/7 : COPY main.go go.* /src/

 ---> a35e7d921196

Step 4/7 : RUN CGO_ENABLED=0 go build -o /bin/demo

 ---> Running in 5fcecf11a2db

Removing intermediate container 5fcecf11a2db

 ---> ad1e2da24557

Step 5/7 : FROM scratch

 ---> 

Step 6/7 : COPY --from=build /bin/demo /bin/demo

 ---> 8630928238d7

Step 7/7 : ENTRYPOINT ["/bin/demo"]

 ---> Running in 51620f8f05af

Removing intermediate container 51620f8f05af

 ---> dea3c5956e88

Successfully built dea3c5956e88

Successfully tagged myhello:latest

[root@master hello]# ls

Dockerfile  go.mod  main.go  README.md

[root@master hello]# docker images

REPOSITORY   TAG           IMAGE ID       CREATED          SIZE

myhello      latest        dea3c5956e88   19 seconds ago   7.44MB

<none>       <none>        ad1e2da24557   19 seconds ago   303MB

mysql        5.6           eb0e825dc3cf   6 days ago       303MB

golang       1.14-alpine   32dc91e030ac   5 months ago     287MB

[root@master hello]# docker ps -a -q

[root@master hello]# docker container run -p 9999:8888 myhello

^C[root@master hello]# 

[root@master hello]# docker image tag myhello chumingcheng/myhello

[root@master hello]# docker images

REPOSITORY             TAG           IMAGE ID       CREATED         SIZE

chumingcheng/myhello   latest        dea3c5956e88   2 minutes ago   7.44MB

myhello                latest        dea3c5956e88   2 minutes ago   7.44MB

<none>                 <none>        ad1e2da24557   2 minutes ago   303MB

mysql                  5.6           eb0e825dc3cf   6 days ago      303MB

golang                 1.14-alpine   32dc91e030ac   5 months ago    287MB

[root@master hello]# docker image push chumingcheng/myhello

Using default tag: latest

The push refers to repository [docker.io/chumingcheng/myhello]

5b3a79de5427: Pushed 

latest: digest: sha256:9e8276428ae126ee3c5a0742b11b4a2f42a01e1c4ccec9f0fae2b07eab62c731 size: 528

[root@master hello]#

[root@master docker]# docker images

REPOSITORY    TAG       IMAGE ID       CREATED        SIZE

mysql         5.6       eb0e825dc3cf   6 days ago     303MB

hello-world   latest    d1165f221234   4 months ago   13.3kB

[root@master docker]# docker rmi hello-world

Error response from daemon: conflict: unable to remove repository reference "hello-world" (must force) - container 8b16c436d2bf is using its referenced image d1165f221234

[root@master docker]# docker image rm hello-world

Error response from daemon: conflict: unable to remove repository reference "hello-world" (must force) - container 8b16c436d2bf is using its referenced image d1165f221234

[root@master docker]# docker ps -a -q

13d593602133

c5af3da47da0

8b16c436d2bf

[root@master docker]# docker stop 8b16c436d2bf

8b16c436d2bf

[root@master docker]# docker rm 8b16c436d2bf

8b16c436d2bf

[root@master docker]# docker ps -a -q

13d593602133

c5af3da47da0

[root@master docker]# docker rmi hello-world

Error response from daemon: conflict: unable to remove repository reference "hello-world" (must force) - container c5af3da47da0 is using its referenced image d1165f221234

[root@master docker]# docker stop c5af3da47da0

c5af3da47da0

[root@master docker]# docker rm c5af3da47da0

c5af3da47da0

[root@master docker]# docker ps -a -q

13d593602133

[root@master docker]# docker rmi hello-world

Untagged: hello-world:latest

Untagged: hello-world@sha256:df5f5184104426b65967e016ff2ac0bfcd44ad7899ca3bbcf8e44e4461491a9e

Deleted: sha256:d1165f2212346b2bab48cb01c1e39ee8ad1be46b87873d9ca7a4e434980a7726

Deleted: sha256:f22b99068db93900abe17f7f5e09ec775c2826ecfe9db961fea68293744144bd

[root@master docker]# docker images

REPOSITORY   TAG       IMAGE ID       CREATED      SIZE

mysql        5.6       eb0e825dc3cf   6 days ago   303MB

[root@master docker]#

[root@master hello]# docker run -p 3306:3306 --name mymysql -v /home/mysql/data:/var/lib/mysql -e MYSQL_ROOT_PASSWORD=123456 -d mysql:5.6

1ee5505141519010431a3e2d9d64d1697e1eab88a78f318c60e3bdc2ef8d9b51

[root@master hello]# docker ps

CONTAINER ID   IMAGE       COMMAND                  CREATED          STATUS          PORTS                                       NAMES

1ee550514151   mysql:5.6   "docker-entrypoint.s…"   12 seconds ago   Up 11 seconds   0.0.0.0:3306->3306/tcp, :::3306->3306/tcp   mymysql

[root@master hello]# docker exec -it 1ee550514151 /bin/bash

root@1ee550514151:/# mysql -uroot -p

Enter password: 

Welcome to the MySQL monitor.  Commands end with ; or \g.

Your MySQL connection id is 1

Server version: 5.6.51 MySQL Community Server (GPL)

Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> show databases;

+--------------------+

| Database           |

+--------------------+

| information_schema |

| jalen              |

| mysql              |

| performance_schema |

+--------------------+

4 rows in set (0.00 sec)

mysql> Ctrl-C -- exit!

Aborted

root@1ee550514151:/# create database grimmdb;

bash: create: command not found

root@1ee550514151:/# mysql -uroot -p

Enter password: 

Welcome to the MySQL monitor.  Commands end with ; or \g.

Your MySQL connection id is 2

Server version: 5.6.51 MySQL Community Server (GPL)

Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> create database grimmdb;

Query OK, 1 row affected (0.01 sec)

mysql> show databases;

+--------------------+

| Database           |

+--------------------+

| information_schema |

| grimmdb            |

| jalen              |

| mysql              |

| performance_schema |

+--------------------+

5 rows in set (0.00 sec)

mysql> exit

Bye

root@1ee550514151:/# exit

exit

[root@master hello]# docker ps

CONTAINER ID   IMAGE       COMMAND                  CREATED         STATUS         PORTS                                       NAMES

1ee550514151   mysql:5.6   "docker-entrypoint.s…"   2 minutes ago   Up 2 minutes   0.0.0.0:3306->3306/tcp, :::3306->3306/tcp   mymysql

[root@master hello]# docker stop 1ee550514151

1ee550514151

[root@master hello]# docker ps -a

CONTAINER ID   IMAGE       COMMAND                  CREATED          STATUS                      PORTS     NAMES

1ee550514151   mysql:5.6   "docker-entrypoint.s…"   2 minutes ago    Exited (0) 6 seconds ago              mymysql

1494c41201d6   myhello     "/bin/demo"              14 minutes ago   Exited (2) 13 minutes ago             interesting_goldwasser

[root@master hello]# docker rm 1ee550514151

1ee550514151

[root@master hello]# docker ps -a

CONTAINER ID   IMAGE     COMMAND       CREATED          STATUS                      PORTS     NAMES

1494c41201d6   myhello   "/bin/demo"   14 minutes ago   Exited (2) 13 minutes ago             interesting_goldwasser

[root@master hello]# cd /home/mysql/data/

[root@master data]# ls

auto.cnf  grimmdb  ibdata1  ib_logfile0  ib_logfile1  jalen  mysql  performance_schema

[root@master data]# docker run -p 3306:3306 --name mymysql -v /home/mysql/data:/var/lib/mysql -e MYSQL_ROOT_PASSWORD=123456 -d mysql:5.6

8cc3dbaa0b79da8f3650e1665e85b59c13b0455c5deee2ab52599ae7add7fdc9

[root@master data]# docker ps

CONTAINER ID   IMAGE       COMMAND                  CREATED          STATUS          PORTS                                       NAMES

8cc3dbaa0b79   mysql:5.6   "docker-entrypoint.s…"   10 seconds ago   Up 10 seconds   0.0.0.0:3306->3306/tcp, :::3306->3306/tcp   mymysql

[root@master data]# docker exec -it 8cc3dbaa0b79 /bin/bash

root@8cc3dbaa0b79:/# mysql -uroot -p

Enter password: 

Welcome to the MySQL monitor.  Commands end with ; or \g.

Your MySQL connection id is 2

Server version: 5.6.51 MySQL Community Server (GPL)

Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> show databases;

+--------------------+

| Database           |

+--------------------+

| information_schema |

| grimmdb            |

| jalen              |

| mysql              |

| performance_schema |

+--------------------+

5 rows in set (0.00 sec)

mysql>