added redhat

Author: hendolim

py23-image/centos-7/Dockerfile

@@ -20,6 +20,6 @@ RUN wget https://www.python.org/ftp/python/3.7.4/Python-3.7.4.tgz \
     && ln -sf /usr/bin/pip2 /usr/bin/pip \
     && ln -sf /usr/bin/pip3.7 /usr/bin/pip3
 RUN yum remove -y --setopt=tsflags=noscripts gcc openssl-devel bzip2-devel libffi-devel \
-    && yum -y autoremove \
+    && yum autoremove -y \
     && yum clean all
 RUN pip3 --no-cache-dir install ansible requests

py23-image/redhat-8/Dockerfile

@@ -2,13 +2,24 @@ ARG SPLUNK_PRODUCT=splunk
 FROM ${SPLUNK_PRODUCT}-redhat-8:latest
 USER root
 
+RUN microdnf -y update \
+    && microdnf -y install make gcc openssl-devel bzip2-devel libffi-devel
 # INFRA-15385: manual installation of python 3.7 as default distro version is 3.6
 RUN wget https://www.python.org/ftp/python/3.7.4/Python-3.7.4.tgz \
     && tar xzf Python-3.7.4.tgz \
     && cd Python-3.7.4 \
     && ./configure --enable-optimizations --prefix=/usr \
-    && make altinstall \
+    && make install \
     && cd .. \
     && rm Python-3.7.4.tgz \
-    && rm -r Python-3.7.4
+    && rm -r Python-3.7.4 \
+    && curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py \
+    && python3.7 get-pip.py \
+    && rm -f get-pip.py \
+    #pip version is not automatically "fixed", unlike debian-based
+    && ln -sf /usr/bin/pip2 /usr/bin/pip \
+    && ln -sf /usr/bin/pip3.7 /usr/bin/pip3
+#microdnf persists metadata which is a problem for removing packages. So have to clean first before removing. 
+RUN microdnf clean all \
+	&& microdnf remove -y gcc make openssl-devel bzip2-devel libffi-devel
 RUN pip3 -q --no-cache-dir install requests ansible