Dockerfile using Dockerfile to create a CentOS Docker image with Apache service

Source: Internet
Author: User
Tags prepare ssh centos docker ps docker run
List of files prepared on the host:
#Start the ssh and apache service corner book

The above files are placed in the/root/apache_centos directory


Base Image: An image of an open SSH service based on a mirrored CentOS

[Root@localhost apache_centos]# Docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             VIRTUAL SIZE
sshd                dockerfile          411d5fb16366        hours ago        278 MB
centos              latest              0f73ae75014f        5 Weeks ago         172.3 MB

First, prepare file
New in/root/apache_centos directory


The contents are as follows:

/usr/sbin/sshd &
/usr/local/apache2/bin/httpd-d FOREGROUND

Second, prepare Dockerfile
New Dockerfile in/root/apache_centos directory

Vim Dockerfile

The contents of the file are as follows:

#The newly generated image is based on the sshd: dockerfile image
FROM sshd: dockerfile
#Install wget
RUN yum install -y wget
WORKDIR / usr / local / src
#Download and unzip the source package
RUN wget
RUN tar -zxvf httpd-2.4.17.tar.gz
WORKDIR httpd-2.4.17
#Compile and install apache
RUN yum install -y gcc make apr-devel apr apr-util apr-util-devel pcre-devel
RUN ./configure --prefix = / usr / local / apache2 --enable-mods-shared = most --enable-so
RUN make
RUN make install
#Modify the apache configuration file
RUN sed -i 's / # ServerName localhost: 80 / g' /usr/local/apache2/conf/httpd.conf
#Start the apache service
RUN / usr / local / apache2 / bin / httpd
#Copy service startup script and set permissions
ADD /usr/local/sbin/
RUN chmod 755 /usr/local/sbin/
#Open port 80
CMD ["/usr/local/sbin/"]

Note that the "CD" command should not be used to replace the current directory in the Dockerfile file, but instead use "Workdir".
Third, create the image

Docker build-t Apache_dockerfile:centos.

To view the generated image:

[Root@localhost apache_centos]# Docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             VIRTUAL SIZE
Apache_dockerfile   CentOS              f8f30b4a0ee8        minutes ago-      MB
Apache              CentOS              F92c55dddd07        hours ago        423.9 MB
sshd                dockerfile 411d5fb16366 all        hours ago        278 MB
centos              latest              0f73ae75014f        5 weeks ago         172.3 MB

Four, according to the container generated by the image and test
1. Create a new container

Docker run-d-P 2222:22-p 8000:80 apache_dockerfile:centos/usr/local/sbin/

Map the container's 22 ports and 80 ports to 2222 ports and 8000 ports on the host, and run the service scripts.

2. View the newly generated container:

[Root@localhost apache_centos]# Docker ps-a
CONTAINER ID        IMAGE                      COMMAND                CREATED             STATUS                      PORTS                                        NAMES
ae560e497f39        apache_dockerfile:centos   "/usr/local/sbin/run seconds   ago               up seconds>22/tcp,>80/tcp   condescending_bardeen
6490CD244C10        apache:centos              "/usr/local/apache2/   hours ago        Exited (0) + hours ago                                                  loving_wright
673e946b57e4        sshd:dockerfile            "/usr/local/sbin/run   hours ago        Exited (137) hours ago                                                Reverent_bell

3. Testing
Test Apache

[root@localhost apache_centos]# Curl localhost:8000

Test SSH

[root@localhost apache_centos]# ssh localhost-p 2222
root@localhost ' s password:


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