A usage instance of Docker Dockerfile

Dockerfile

FROM base mirror

MAINTAINER maintains this information

What command does RUN run, preceded by RUN

ADD add some files to it, copy files, it will unzip automatically

WORKDIR current working directory

Mount the VOLUME directory

EXPOSE open port

The RUN process runs 1 straight

Actual combat: build nginx

wget http://xiazai.ofstack.com/201611/yuanma/nginx-1.9.3(ofstack.com).rar

wget ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/pcre-8.38.tar.gz

#This is My first Dockerfile#version 1.0
#Author: hh 
#Base image  Base image 
FROM centos
#MAINTAINER  Maintainer information 
MAINTAINER hh Wang 
#ADD
ADD pcre-8.38.tar.gz /usr/local/srcADD nginx-1.9.3.tar.gz /usr/local/src 
#RUN
RUN yum -y install wget gcc gcc-c++ make openssl openssl-devel
RUN useradd -s /sbin/nologin -M www 
#WORKDIR
WORKDIR /usr/local/src/nginx-1.9.3 
RUN ./configure --prefix=/usr/local/nginx --user=www --group=www --with-http_ssl_module --with-http_stub_status_module \
--with-pcre=/usr/local/src/pcre-8.38 && make && make install 
RUN echo "daemon off;">>/usr/local/nginx/conf/nginx.conf 
#ENV Define environment variables 
ENV PATH /usr/local/nginx/sbin:$PATH 
#EXPOSE  Port mapping 
EXPOSE 80 CMD ["nginx"]

docker build -t whh/nginx-file:v1 .

docker run -d -it -p 93:80 --name nginx whh/nginx-file:v1

Now let's look at the use of dockerfile

Mirroring can be done with the docker build command.

Usually a text file Dockerfile is required, as shown below:

from hub. c. 163. com/library nginx - based on the image

run echo "hello world" > / etc nginx/index xml -- appended to index. html at the end

expose 80 -- exposed port 80

cmd 'nginx' -- start the nginx service

After saving, run docker build-t mynginx:1.0.

Then run docker images and see the image you built.

docker run-d-p 8082:80 --name nginx_web mynginx:1.0

Finally, http://ip:8081 is accessed via http://ip:8081 to nginx's index.html