Set centos image version to 7 as epel for centos 8 does not contain supervisor
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#Dockerfile for a Postfix email relay service
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					#Dockerfile for a Postfix email relay service
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FROM centos:latest
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					FROM centos:7
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MAINTAINER Juan Luis Baptiste juan.baptiste@gmail.com
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					MAINTAINER Juan Luis Baptiste juan.baptiste@gmail.com
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RUN yum install -y epel-release && yum update -y && \
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					RUN yum install -y epel-release && yum update -y && \
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