Add validation workflow

Add new GitHub actions workflow to validate install from source on
supported distributions.

Author: ldennington

.github/workflows/validate-install-from-source.yml

@@ -0,0 +1,33 @@
+name: validate-install-from-source
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  docker:
+    name: ${{matrix.vector.image}}
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        vector:
+        - image: ubuntu
+        - image: debian
+        - image: linuxmintd/mint20-amd64
+        - image: fedora
+        - image: centos
+        - image: redhat/ubi8
+        - image: alpine
+    container: ${{matrix.vector.image}}
+    steps:
+      - uses: actions/checkout@v1
+      - run: |
+          if [ ${{matrix.vector.image}} == "centos" ]; then
+            sed -i 's/mirrorlist/#mirrorlist/g' /etc/yum.repos.d/CentOS-Linux-*
+            sed -i 's|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|g' /etc/yum.repos.d/CentOS-Linux-*
+          fi
+
+          sh "${GITHUB_WORKSPACE}/src/linux/Packaging.Linux/install-from-source.sh" -y
+          git-credential-manager-core --help || exit 1