实战案例：Dockerfile 直接制作nginx镜像

在Dockerfile目录下准备编译安装的相关文件

[root@ubuntu1804 ~]#mkdir /data/dockerfile/web/nginx/1.16.1
[root@ubuntu1804 ~]#cd /data/dockerfile/web/nginx/1.16.1
[root@ubuntu1804 1.16.1]#vim nginx.conf
user  nginx;
worker_processes  1;
#daemon off;
[root@ubuntu1804 1.16.1]#wget http://nginx.org/download/nginx-1.16.1.tar.gz

编写Dockerfile文件

[root@ubuntu1804 1.16.1]#pwd
/data/dockerfile/web/nginx/1.16.1
[root@ubuntu1804 1.16.1]#vim Dockerfile
[root@ubuntu1804 1.16.1]#cat Dockerfile
#Nginx Dockerfile

FROM centos:centos7.7.1908 

MAINTAINER wangxiaochun <root@wangxiaochun.com>

RUN yum install -y  gcc gcc-c++  pcre pcre-devel zlib zlib-devel openssl openssl-devel \
    && useradd -r -s /sbin/nologin nginx \
    && yum clean all 

ADD nginx-1.16.1.tar.gz /usr/local/src/ 

RUN cd /usr/local/src/nginx-1.16.1 \
    && ./configure --prefix=/apps/nginx \
    && make \
    && make install \
    && rm -rf /usr/local/src/nginx*

ADD nginx.conf /apps/nginx/conf/nginx.conf

COPY index.html /apps/nginx/html/

RUN ln -s /apps/nginx/sbin/nginx /usr/sbin/nginx 

EXPOSE 80 443

CMD ["nginx","-g","daemon off;"]

生成nginx镜像

[root@ubuntu1804 ~]#cd /data/dockerfile/web/nginx/1.16.1
[root@ubuntu1804 1.16.1]#vim build.sh
[root@ubuntu1804 1.16.1]#cat build.sh
#!/bin/bash
#
docker build -t nginx-centos7:1.6.1-v2 .
[root@ubuntu1804 1.16.1]#chmod +x build.sh
[root@ubuntu1804 1.16.1]#ls
build.sh  Dockerfile  index.html  nginx-1.16.1.tar.gz  nginx.conf
[root@ubuntu1804 1.16.1]#./build.sh 
[root@ubuntu1804 1.16.1]#docker images 
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
nginx-centos7       1.6.1-v2            1918d29d5f45        17 minutes ago      328MB
nginx-centos7       1.6.1               8c16774437a5        13 hours ago        412MB
centos7-base        v1                  1ba1317e06dc        15 hours ago        402MB
centos              centos7.7.1908      08d05d1d5859        2 months ago        204MB

生成容器测试镜像

[root@ubuntu1804 ~]#docker run  -d -p 80:80  nginx-centos7:1.6.1-v2 
21c954ad4fb902076832cc9a52dd1502aca43d9bcd2b46a2f164382e4ac7b3f6
[root@ubuntu1804 ~]#docker ps 
CONTAINER ID        IMAGE                    COMMAND                  CREATED             STATUS              PORTS                         NAMES
21c954ad4fb9        centos7-nginx:1.6.1-v2   "nginx -g 'daemon of…"   6 seconds ago       Up 4 seconds        0.0.0.0:80->80/tcp, 443/tcp   inspiring_goldwasser
[root@ubuntu1804 ~]#curl 127.0.0.1
Test Page v2 in Docker
[root@ubuntu1804 ~]#docker exec -it 21c954ad4fb9 bash
[root@21c954ad4fb9 /]# ps aux
USER        PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root          1  0.5  0.2  20572  2372 ?        Ss   03:30   0:00 nginx: master process nginx -g daemon off;
nginx         6  0.0  0.2  21024  2316 ?        S    03:30   0:00 nginx: worker process
root          7 11.5  0.2  11840  2880 pts/0    Ss   03:31   0:00 bash
root         20  0.0  0.3  51764  3376 pts/0    R+   03:31   0:00 ps aux
[root@21c954ad4fb9 /]# exit
exit
[root@ubuntu1804 ~]#

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