云计算day33

通过dockerfile创建⼀个在启动容器时，就可以启动httpd服务的镜

像

步骤

1. 创建⼀个⽬录，⽤于存储Docker file所使⽤的⽂件

1. 在此⽬录中创建Docker file⽂件，以及镜像制作所使⽤的⽂

件

1. 使⽤docker build创建镜像

1. 使⽤创建的镜像启动容器（验证）

思考

1. 基础镜像

1. yum -y install httpd

1. 使⽤脚本启动服务（httpd -k start）

1. 应该将httpd服务放在前端执⾏

1. 暴露端⼝ 80/tcp

1. 添加⼀个测试⽂件，⽤于验证软件是否可⽤

过程

# 1.创建⽬录

[root@docker001 ~]# mkdir test

# 2.跳转到⽬录中[root@docker001 ~]# cd test/

# 3.编辑启动脚本

[root@docker001 test]# vim start.sh

[root@docker001 test]# cat start.sh

######################################

#!/bin/bah

rm -rf /run/httpd/*

exec /sbin/httpd -D FOREGROUND

######################################

# 4.编辑index.html⽂件

[root@docker001 test]# vim index.html

# 5.编辑Dockerfile

[root@docker001 test]# vim Dockerfile

####################################

FROM centos_yum:v0

MAINTAINER "httpd server start

15773141955@163.com"

RUN yum clean all

RUN yum makecacheRUN yum -y install httpd

ADD start.sh /start.sh

RUN chmod -v +x /start.sh

Add index.html /var/www/html/

EXPOSE 80

WORKDIR /

CMD ["/bin/bash","/start.sh"]

####################################

# 6.创建镜像

[root@docker001 test]# docker build -t

centos:httpd .

[+] Building 51.6s (12/12) FINISHED

docker:default=> [internal] load build definition from

Dockerfile

0.0s

=> => transferring dockerfile: 309B

0.0s

=> [internal] load metadata for

docker.io/library/centos_yum:v0

0.0s

=> [internal] load .dockerignore

0.0s

=> => transferring context: 2B

0.0s

=> [1/8] FROM docker.io/library/centos_yum:v0

0.0s

=> [internal] load build context

0.0s

=> => transferring context: 180B

0.0s

=> [2/8] RUN YUM clean all

2.3s

=> [3/8] RUN YUM makecache

42.7s

=> [4/8] RUN YUM -y install httpd

5.8s

=> [5/8] ADD START.SH /START.SH

0.0s=> [6/8] RUN CHMOD -v +x /start.sh

0.2s

=> [7/8] ADD INDEX.HTML /VAR/WWW/HTML/

0.0s

=> exporting to image

0.5s

=> => exporting layers

0.4s

=> => writing image

sha256:a488bc9f4cfb58a91baa57c2ab9faf615d457ff8714

e4e958e7220a253469ed 0.0s

=> => naming to docker.io/library/centos:httpd

# 7.查看镜像

[root@docker001 test]# docker image ls

REPOSITORY TAG IMAGE ID CREATED

SIZE

centos httpd a488bc9f4cfb About a

minute ago 352MB

centos nginx 12fea1b890de 41 hours ago

366MB

centos java17 b6bf774de7bb 41 hours ago

550MB

centos_yum v0 191d9c84f461 2 days ago

260MBmysql latest a82a8f162e18 4 weeks ago

586MB

# 9.创建容器测试

[root@docker001 test]# docker run -d --name c0

centos:httpd

c245d9f9f3e0d6526d80e117ebd7b4c2870a1e12558192f1da

1e681cabdc4e87

[root@docker001 test]# docker ps --all

CONTAINER ID IMAGE COMMAND

CREATED STATUS PORTS

NAMES

c245d9f9f3e0 centos:httpd "/bin/bash

/start.sh" 21 seconds ago Up 20 seconds

80/tcp c0

# 10.查看ip地址

[root@docker001 test]# docker inspect c0

# 访问测试

[root@docker001 test]# curl 172.17.0.2

p

pp

ppp

pppp

ppppppppppp

ppppppp

pppppppp

测试挂载其他项⽬

[root@docker001 test]# docker run -d -v

/opt:/var/www/html --name c1 centos:httpd

3c97af2d11a56b9c2f2ea4eb6bb0a7ff18d6f26d0f777f68a4

eb4a20b9c61835

[root@docker001 test]# eche

"adsfadfafwqrdfqdsafdgdfsgda" > /opt/index.html

-bash: eche: 未找到命令

[root@docker001 test]# echo

"adsfadfafwqrdfqdsafdgdfsgda" > /opt/index.html

[root@docker001 test]# curl 172.17.0.3

adsfadfafwqrdfqdsafdgdfsgda

yum -y install yum-plugin-ovl练习 配置nginx应⽤镜像

FROM centos:latest

MAINTAINER "NGINX"

RUN rm -rf /etc/yum.repos.d/*

RUN curl -o /etc/yum.repos.d/CentOS-Base.repo

https://mirrors.aliyun.com/repo/Centos-vault-

8.5.2111.repo

RUN yum clean all && yum makecache

RUN yum -y install epel-release && yum -y

install nginx

RUN echo "daemon off;" >> /etc/nginx/nginx.conf

WORKDIR /

CMD /usr/sbin/nginx[root@docker001 ~]# docker run -d --name c1 -

p80:80 -v /opt/:/usr/share/nginx/html/

centos:nginx

948f20e1ed4758e78759de8f9ce9b34a7f44c431bc8ead75b6

70e1a5b488654c