Add Python3 to CentOS 7 images

Author: adamretter

centos7_arm64v8/Dockerfile

@@ -46,7 +46,7 @@ RUN \
   && sed -i s%#baseurl=http://mirror.centos.org/centos/7/%baseurl=https://vault.centos.org/altarch/7.9.2009/%g /etc/yum.repos.d/CentOS-SCLo-scl-rh.repo \
   && yum --setopt=tsflags=nodocs -y upgrade \
   && yum --setopt=tsflags=nodocs -y install devtoolset-7 \
-  && yum --setopt=tsflags=nodocs -y install make perl which bzip2 wget \
+  && yum --setopt=tsflags=nodocs -y install make perl python3 which bzip2 wget \
   && yum --setopt=tsflags=nodocs -y install gettext-devel openssl openssl-devel zlib-devel expat-devel libssh2-devel jemalloc-devel \
   && yum -y clean all
 

centos7_ppc64le/Dockerfile

@@ -46,7 +46,7 @@ RUN \
   && sed -i s%#baseurl=http://mirror.centos.org/centos/7/%baseurl=https://vault.centos.org/altarch/7.9.2009/%g /etc/yum.repos.d/CentOS-SCLo-scl-rh.repo \
   && yum --setopt=tsflags=nodocs -y upgrade \
   && yum --setopt=tsflags=nodocs -y install devtoolset-7 \
-  && yum --setopt=tsflags=nodocs -y install make perl which bzip2 wget \
+  && yum --setopt=tsflags=nodocs -y install make perl python3 which bzip2 wget \
   && yum --setopt=tsflags=nodocs -y install gettext-devel openssl openssl-devel zlib-devel expat-devel libssh2-devel jemalloc-devel  \
   && yum -y clean all
 

centos7_s390x/Dockerfile

@@ -40,7 +40,7 @@ RUN \
   && yum -y install centos-release-scl-rh \
   && yum --setopt=tsflags=nodocs -y upgrade \
   && yum --setopt=tsflags=nodocs -y install devtoolset-7 \
-  && yum --setopt=tsflags=nodocs -y install make perl which bzip2 wget \
+  && yum --setopt=tsflags=nodocs -y install make perl python3 which bzip2 wget \
   && yum --setopt=tsflags=nodocs -y install gettext-devel openssl openssl-devel zlib-devel expat-devel libssh2-devel jemalloc-devel \
   && yum -y clean all
 

centos7_x64/Dockerfile

@@ -46,7 +46,7 @@ RUN \
   && sed -i s%#baseurl=http://mirror.centos.org/centos/7/%baseurl=https://vault.centos.org/7.9.2009/%g /etc/yum.repos.d/CentOS-SCLo-scl-rh.repo \
   && yum --setopt=tsflags=nodocs -y upgrade \
   && yum --setopt=tsflags=nodocs -y install devtoolset-7 \
-  && yum --setopt=tsflags=nodocs -y install make perl which bzip2 wget \
+  && yum --setopt=tsflags=nodocs -y install make perl python3 which bzip2 wget \
   && yum --setopt=tsflags=nodocs -y install gettext-devel openssl openssl-devel zlib-devel expat-devel libssh2-devel jemalloc-devel \
   && yum -y clean all
 

centos7_x86/Dockerfile

@@ -44,7 +44,7 @@ RUN \
   && linux32 yum --setopt=tsflags=nodocs -y update \
   && linux32 yum --setopt=tsflags=nodocs -y upgrade \
   && linux32 yum --setopt=tsflags=nodocs -y install devtoolset-8 \
-  && linux32 yum --setopt=tsflags=nodocs -y install make perl which bzip2 wget \
+  && linux32 yum --setopt=tsflags=nodocs -y install make perl python3 which bzip2 wget \
   && linux32 yum --setopt=tsflags=nodocs -y install gettext-devel openssl openssl-devel zlib-devel expat-devel libssh2-devel \
   && linux32 yum -y clean all \
   && wget https://github.com/jemalloc/jemalloc/releases/download/$JEMALLOC_VERSION/jemalloc-$JEMALLOC_VERSION.tar.bz2 \