Produce RPM packages

Reference from https://github.com/dotnet/core-setup/tree/master/src/pkg/packaging/rpm

The goal is to have parity with Debian,
but does not publish to the feed

When run the script with rhel, it will
produce rpm file in the package step
and publish rpm to the blob storage

scripts/docker/rhel/Dockerfile

@@ -0,0 +1,27 @@
+#
+# Copyright (c) .NET Foundation and contributors. All rights reserved.
+# Licensed under the MIT license. See LICENSE file in the project root for full license information.
+#
+
+# Dockerfile that creates a container suitable to build dotnet-cli
+FROM microsoft/dotnet-buildtools-prereqs:rhel-7-rpmpkg-c982313-20174116044113
+
+# Install from sudo main package TODO This package needs to be mirrored
+RUN yum install -y https://www.sudo.ws/sudo/dist/packages/RHEL/7/sudo-1.8.20-3.el7.x86_64.rpm \
+    && yum clean all
+
+# Setup User to match Host User, and give superuser permissions
+ARG USER_ID=0
+RUN useradd -m code_executor -u ${USER_ID} -g root
+RUN echo 'code_executor ALL=(ALL) NOPASSWD:ALL' >> /etc/sudoers
+
+# With the User Change, we need to change permssions on these directories
+RUN chmod -R a+rwx /usr/local
+RUN chmod -R a+rwx /home
+RUN chown root:root /usr/bin/sudo && chmod 4755 /usr/bin/sudo
+
+# Set user to the one we just created
+USER ${USER_ID}
+
+# Set working directory
+WORKDIR /opt/code

scripts/dockerrun.sh

@@ -67,6 +67,9 @@ if [ -z "$DOCKERFILE" ]; then
         elif [ "$(cat /etc/*-release | grep -cim1 centos)" -eq 1 ]; then
             echo "Detected current OS as CentOS, using 'centos' image"
             export DOCKERFILE=scripts/docker/centos
+        elif [ "$(cat /etc/*-release | grep -cim1 rhel)" -eq 1 ]; then
+            echo "Detected current OS as rhel, using 'rhel' image"
+            export DOCKERFILE=scripts/docker/rhel
         elif [ "$(cat /etc/*-release | grep -cim1 debian)" -eq 1 ]; then
             echo "Detected current OS as Debian, using 'debian' image"
             export DOCKERFILE=scripts/docker/debian

scripts/obtain/uninstall/dotnet-uninstall-rpm-packages.sh

@@ -0,0 +1,39 @@
+#!/usr/bin/env bash
+#
+# Copyright (c) .NET Foundation and contributors. All rights reserved.
+# Licensed under the MIT license. See LICENSE file in the project root for full license information.
+#
+
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+
+current_userid=$(id -u)
+if [ $current_userid -ne 0 ]; then
+    echo "$(basename "$0") uninstallation script requires superuser privileges to run"
+    exit 1
+fi
+
+host_package_name="dotnet-host"
+
+remove_all(){
+    yum remove -y $host_package_name
+}
+
+is_dotnet_host_installed(){
+    local out="$(yum list installed | grep $host_package_name)"
+    [ -z "$out" ]
+}
+
+is_dotnet_host_installed
+[ "$?" -eq 0 ] && echo "Unable to find dotnet installation to remove." >&2 \
+    && exit 0
+
+remove_all
+[ "$?" -ne 0 ] && echo "Failed to remove dotnet packages." >&2 && exit 1
+
+is_dotnet_host_installed
+[ "$?" -ne 0 ] && \
+    echo "dotnet package removal succeeded but appear to still be installed. Please file an issue at https://github.com/dotnet/cli" >&2 && \
+    exit 1
+
+echo "dotnet package removal succeeded." >&2
+exit 0