docker进阶教程之dockerfile优化镜像大小

mkdir /mnt/nginx
 
vim dockerfile
from centos:7
run yum install -y gcc pcre pcre-devel devel zlib-devel make
add nginx-1.22.0.tar.gz /mnt/nginx
workdir /mnt/nginx/nginx-1.22.0
#关闭debug日志
run sed -i 's/cflags="$cflags -g"/#cflags="$cflags -g"/g' auto/cc/gcc 
run ./configure --prefix=/usr/local/nginx 
run make
run make install
expose 80
volume ["/usr/local/nginx/html"]
cmd ["/usr/local/nginx/sbin/nginx","-g","daemon off;"]  

from centos:7
run yum install -y gcc pcre pcre-devel devel zlib-devel make &> /dev/null && yum clean all
add nginx-1.22.0.tar.gz /mnt/nginx
workdir /mnt/nginx/nginx-1.22.0
run sed -i 's/cflags="$cflags -g"/#cflags="$cflags -g"/g' auto/cc/gcc
run ./configure --prefix=/usr/local/nginx &> /dev/null
run make &> /dev/null
run make install &> /dev/null
run rm -rf /mnt/nginx/nginx-1.22.0
expose 80
volume ["/usr/local/nginx/html"]
cmd ["/usr/local/nginx/sbin/nginx""-g","daemon off;"]

from centos:7
add nginx-1.22.0.tar.gz /mnt/nginx
workdir /mnt/nginx/nginx-1.22.0
run yum install -y gcc pcre pcre-devel devel zlib-devel make &> /dev/null && \
 yum clean all && \
 sed -i 's/cflags="$cflags -g"/#cflags="$cflags -g"/g' auto/cc/gcc && \
 ./configure --prefix=/usr/local/nginx &> /dev/null && \
 make &> /dev/null && make install &> /dev/null &&\
 rm -rf /mnt/nginx/nginx-1.22.0
expose 80
volume ["/usr/local/nginx/html"]
cmd ["/usr/local/nginx/sbin/nginx","-g","daemon off;"]

from centos:7 as build 
add nginx-1.22.0.tar.gz /mnt/nginx 
workdir /mnt/nginx/nginx-1.22.0
run yum install -y gcc pcre pcre-devel devel zlib-devel make &> /dev/null && \
yum clean all &&\
sed -i 's/cflags="$cflags -g"/#cflags="$cflags -g"/g' auto/cc/gcc && \
./configure --prefix=/usr/local/nginx &> /dev/null && \
make &>/dev/null && \
make install &>/dev/null && \
rm -rf /mnt/nginx/nginx-1.22.0

from centos:7
expose 80
volume ["/usr/local/nginx/html"]
copy --from=build /usr/local/nginx /usr/local/nginx
cmd ["/usr/local/nginx/sbin/nginx","-g","daemon off;"]

docker build -t nginx:v4 . 构建镜像
docker images查看镜像

#下载debian压缩包
wget http://download.openvz.org/template/precreated/debian-7.0-x86-minimal.tar.gz
docker import debian-7.0-x86-minimal.tar.gz -- debian:v1 生成镜像
docker images 查看