Dockerfile.deploy adds EPEL repo (#3309)

This repo is needed in order to install uwsgi.

Dockerfile.deploy

@@ -15,7 +15,8 @@ RUN useradd -u ${OLYMPIA_UID} -s /sbin/nologin olympia
 RUN usermod -a -G uwsgi olympia
 
 ADD docker/nodesource.gpg.key /etc/pki/rpm-gpg/RPM-GPG-KEY-nodesource
-ADD docker/nodesource.repo /etc/yum.repos.d/nodesource.repo
+ADD docker/epel.gpg.key /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7
+ADD docker/nodesource.repo docker/epel.repo /etc/yum.repos.d/
 
 RUN yum update -y                                           \
     && yum install -y                                       \

docker/epel.gpg.key

@@ -0,0 +1,29 @@
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+Version: GnuPG v1.4.11 (GNU/Linux)
+
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+RjsC7FDbL017qxS+ZVA/HGkyfiu4cpgV8VUnbql5eAZ+1Ll6Dw==
+=hdPa
+-----END PGP PUBLIC KEY BLOCK-----

docker/epel.repo

@@ -0,0 +1,26 @@
+[epel]
+name=Extra Packages for Enterprise Linux 7 - $basearch
+#baseurl=http://download.fedoraproject.org/pub/epel/7/$basearch
+mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=epel-7&arch=$basearch
+failovermethod=priority
+enabled=1
+gpgcheck=1
+gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7
+
+[epel-debuginfo]
+name=Extra Packages for Enterprise Linux 7 - $basearch - Debug
+#baseurl=http://download.fedoraproject.org/pub/epel/7/$basearch/debug
+mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=epel-debug-7&arch=$basearch
+failovermethod=priority
+enabled=0
+gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7
+gpgcheck=1
+
+[epel-source]
+name=Extra Packages for Enterprise Linux 7 - $basearch - Source
+#baseurl=http://download.fedoraproject.org/pub/epel/7/SRPMS
+mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=epel-source-7&arch=$basearch
+failovermethod=priority
+enabled=0
+gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7
+gpgcheck=1