Reducing size

Author: daniel78uk

Dockerfile

@@ -3,10 +3,11 @@ FROM centos:7
 MAINTAINER dan78uk
 
 # Install required dependencies
-RUN yum -y groups mark convert
-RUN yum clean all && yum -y swap fakesystemd systemd
-RUN yum -y groupinstall 'Development Tools' && yum -y clean all
-RUN yum -y install gcc-c++ pcre-dev pcre-devel zlib-devel make unzip httpd-devel libxml2 libxml2-devel wget openssl-devel && yum -y clean all
+RUN yum -y groups mark convert \
+    && yum clean all && yum -y swap fakesystemd systemd \
+    && yum -y groupinstall 'Development Tools' && yum -y clean all \
+    && yum -y install gcc-c++ pcre-dev pcre-devel zlib-devel make unzip httpd-devel libxml2 libxml2-devel wget openssl-devel \
+    && yum -y clean all
 
 # Set working dir
 ENV WORKING_DIRECTORY=/opt/nginx_mod_security
@@ -41,31 +42,34 @@ RUN wget https://raw.githubusercontent.com/SpiderLabs/ModSecurity/master/modsecu
     && cat ${CRS_DIR}/modsecurity_crs_10_setup.conf.example >> /etc/nginx/modsecurity.conf \
     && cat ${CRS_DIR}/base_rules/modsecurity_*.conf >> /etc/nginx/modsecurity.conf \
     && cp ${CRS_DIR}/base_rules/*.data /etc/nginx/ \
-    && cp ModSecurity/unicode.mapping /etc/nginx/unicode.mapping
+    && cp ModSecurity/unicode.mapping /etc/nginx/unicode.mapping \
+    && rm -rf ${CRS_DIR} *.tar.gz
 
 # Compile Nginx
 RUN wget http://nginx.org/download/nginx-${NGINX_VERSION}.tar.gz \
     && tar -xvzf nginx-${NGINX_VERSION}.tar.gz \
     && cd nginx-${NGINX_VERSION}/ \
     && ./configure $NGINX_ADD_MODULES $NGINX_EXTRA_MODULES \
     && make \
-    && make install
+    && make install \
+    && cd .. \
+    && rm -rf nginx-${NGINX_VERSION} nginx-${NGINX_VERSION}.tar.gz
 
 # Link nginx and clean solution
-RUN ln -s /usr/local/nginx/sbin/nginx /usr/bin/nginx
-RUN cp /usr/local/nginx/conf/*.* /etc/nginx/
+RUN ln -s /usr/local/nginx/sbin/nginx /usr/bin/nginx \
+    && cp /usr/local/nginx/conf/*.* /etc/nginx/
 WORKDIR /etc/nginx
-RUN rm -rf $WORKING_DIRECTORY
-RUN yum -y groupremove "Development tools"
-RUN yum -y clean headers
-RUN yum -y clean packages
+RUN rm -rf $WORKING_DIRECTORY \
+    && yum -y groupremove "Development tools" \
+    && yum clean all
 
 # Check Nginx installation
 RUN nginx -V
 
 # Enable basic configurations and import of external configurations
-RUN yum -y install openssl && yum -y clean all
-RUN rm -rf /etc/nginx/conf.d/*; \
+RUN yum -y install openssl \
+    && yum -y clean all \
+    && rm -rf /etc/nginx/conf.d/*; \
     mkdir -p /etc/nginx/external
 RUN sed -i 's/access_log.*/access_log \/dev\/stdout;/g' /etc/nginx/nginx.conf; \
     sed -i 's/error_log.*/error_log \/dev\/stdout info;/g' /etc/nginx/nginx.conf;