Install gh CLI on centos 7

Signed-off-by: James Wainwright <james.wainwright@lowrisc.org>

.github/workflows/toolchain_build.yml

@@ -54,25 +54,7 @@ jobs:
  - name: Setup environment
  run: |
  echo ::group::Install dependencies
- yum install -y \
- sudo \
- git \
- shadow-utils \
- bison \
- flex \
- texinfo \
- help2man \
- gawk \
- gettext \
- curl \
- xz \
- ncurses-devel \
- ncurses-static \
- pixman-devel \
- rh-python36 \
- zlib-devel \
- zlib-static \
- libffi-devel
+ ./prepare-centos-7.sh
  echo ::endgroup::
 
  echo ::group::Install crosstool-ng

prepare-centos-7.sh

@@ -0,0 +1,31 @@
+#!/bin/bash
+# Copyright lowRISC contributors.
+# Licensed under the Apache License, Version 2.0, see LICENSE for details.
+# SPDX-License-Identifier: Apache-2.0
+
+set -e
+set -x
+
+# Repository for the `gh` GitHub CLI tool used for creating releases.
+yum-config-manager --add-repo https://cli.github.com/packages/rpm/gh-cli.repo
+
+yum install -y \
+ sudo \
+ gh \
+ git \
+ shadow-utils \
+ bison \
+ flex \
+ texinfo \
+ help2man \
+ gawk \
+ gettext \
+ curl \
+ xz \
+ ncurses-devel \
+ ncurses-static \
+ pixman-devel \
+ rh-python36 \
+ zlib-devel \
+ zlib-static \
+ libffi-devel