[aesteban@localhost ~]$ 
[aesteban@localhost ~]$ 
[aesteban@localhost ~]$ cat /etc/redhat-release 
Fedora release 24 (Twenty Four)
[aesteban@localhost ~]$ 
[aesteban@localhost ~]$ sudo docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
[aesteban@localhost ~]$ sudo docker ps -a
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES
[aesteban@localhost ~]$ 
[aesteban@localhost ~]$ sudo docker pull centos:7
Trying to pull repository docker.io/library/centos ... 
7: Pulling from docker.io/library/centos

a02a4930cb5d: Pull complete 
Digest: sha256:184e5f35598e333bfa7de10d8fb1cebb5ee4df5bc0f970bf2b1e7c7345136426
Status: Downloaded newer image for docker.io/centos:7
[aesteban@localhost ~]$ 
[aesteban@localhost ~]$ sudo docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
docker.io/centos    7                   1e1148e4cc2c        6 days ago          201.8 MB
[aesteban@localhost ~]$ sudo docker ps -a
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES
[aesteban@localhost ~]$ sudo docker run -d --privileged -p 80:80 docker.io/centos:7 /sbin/init
f0faf6197fbc696796333bfc81f25d537a1aba170b81f2076010222e84284b36
[aesteban@localhost ~]$ 
[aesteban@localhost ~]$ sudo docker exec -it f0faf6197fbc696796333bfc81f25d537a1aba170b81f2076010222e84284b36  bash
[root@f0faf6197fbc /]# 
[root@f0faf6197fbc /]# 
[root@f0faf6197fbc /]# yum install epel-release
...
[root@f0faf6197fbc /]# 
[root@f0faf6197fbc /]# 
[root@f0faf6197fbc /]# yum install nginx
...
[root@f0faf6197fbc /]# 
[root@f0faf6197fbc /]# 
[root@f0faf6197fbc /]# systemctl enable nginx
Created symlink from /etc/systemd/system/multi-user.target.wants/nginx.service to /usr/lib/systemd/system/nginx.service.
[root@f0faf6197fbc /]# 
[root@f0faf6197fbc /]# systemctl start nginx
[root@f0faf6197fbc /]# 
[root@f0faf6197fbc /]# systemctl status nginx
● nginx.service - The nginx HTTP and reverse proxy server
   Loaded: loaded (/usr/lib/systemd/system/nginx.service; enabled; vendor preset: disabled)
   Active: active (running) since Wed 2018-12-12 02:55:32 UTC; 4s ago
  Process: 2643 ExecStart=/usr/sbin/nginx (code=exited, status=0/SUCCESS)
  Process: 2642 ExecStartPre=/usr/sbin/nginx -t (code=exited, status=0/SUCCESS)
  Process: 2641 ExecStartPre=/usr/bin/rm -f /run/nginx.pid (code=exited, status=0/SUCCESS)
 Main PID: 2644 (nginx)
   CGroup: /system.slice/docker-f0faf6197fbc696796333bfc81f25d537a1aba170b81f2076010222e84284b36.scope/system.slice/nginx.service
           ├─2644 nginx: master process /usr/sbin/nginx
           ├─2645 nginx: worker process
           ├─2646 nginx: worker process
           ├─2647 nginx: worker process
           └─2648 nginx: worker process

Dec 12 02:55:31 f0faf6197fbc systemd[1]: Starting The nginx HTTP and reverse proxy server...
Dec 12 02:55:31 f0faf6197fbc nginx[2642]: nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
Dec 12 02:55:31 f0faf6197fbc nginx[2642]: nginx: configuration file /etc/nginx/nginx.conf test is successful
Dec 12 02:55:32 f0faf6197fbc systemd[1]: Started The nginx HTTP and reverse proxy server.
[root@f0faf6197fbc /]# 
[root@f0faf6197fbc /]#
[root@f0faf6197fbc /]# 
[root@f0faf6197fbc /]# exit
exit
[aesteban@localhost ~]$ 
[aesteban@localhost ~]$ # localhost should now be accessible in browser
[aesteban@localhost ~]$ 
[aesteban@localhost ~]$ 
[aesteban@localhost ~]$ 
[aesteban@localhost ~]$ sudo docker exec -it f0faf6197fbc  systemctl status nginx
● nginx.service - The nginx HTTP and reverse proxy server
   Loaded: loaded (/usr/lib/systemd/system/nginx.service; enabled; vendor preset: disabled)
   Active: active (running) since Wed 2018-12-12 02:55:32 UTC; 1min 57s ago
  Process: 2643 ExecStart=/usr/sbin/nginx (code=exited, status=0/SUCCESS)
  Process: 2642 ExecStartPre=/usr/sbin/nginx -t (code=exited, status=0/SUCCESS)
  Process: 2641 ExecStartPre=/usr/bin/rm -f /run/nginx.pid (code=exited, status=0/SUCCESS)
 Main PID: 2644 (nginx)
   CGroup: /system.slice/docker-f0faf6197fbc696796333bfc81f25d537a1aba170b81f2076010222e84284b36.scope/system.slice/nginx.service
           ├─2644 nginx: master process /usr/sbin/nginx
           ├─2645 nginx: worker process
           ├─2646 nginx: worker process
           ├─2647 nginx: worker process
           └─2648 nginx: worker process

Dec 12 02:55:31 f0faf6197fbc systemd[1]: Starting The nginx HTTP and reverse proxy server...
Dec 12 02:55:31 f0faf6197fbc nginx[2642]: nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
Dec 12 02:55:31 f0faf6197fbc nginx[2642]: nginx: configuration file /etc/nginx/nginx.conf test is successful
Dec 12 02:55:32 f0faf6197fbc systemd[1]: Started The nginx HTTP and reverse proxy server.
[aesteban@localhost ~]$ 
[aesteban@localhost ~]$ 
[aesteban@localhost ~]$
[aesteban@localhost ~]$ 
[aesteban@localhost ~]$ 
[aesteban@localhost ~]$ sudo docker exec -it f0faf6197fbc  bash
[root@f0faf6197fbc /]# 
[root@f0faf6197fbc /]# 
[root@f0faf6197fbc /]# 
[root@f0faf6197fbc /]# systemctl status postfix
Unit postfix.service could not be found.
[root@f0faf6197fbc /]# 
[root@f0faf6197fbc /]# systemctl status memcached
Unit memcached.service could not be found.
[root@f0faf6197fbc /]# 
[root@f0faf6197fbc /]# 
[root@f0faf6197fbc /]#  # We can install postfix and memcached with yum using the same procedure! 
[root@f0faf6197fbc /]# 
[root@f0faf6197fbc /]#  # Exercise Done :) !! 

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