Add test build github action workflow.

Author: gizmoguy

.github/workflows/release-debian.yml

@@ -1,4 +1,4 @@
-name: Build debian packages
+name: Build debian package
 
 on:
   release:
@@ -10,7 +10,7 @@ env:
 
 jobs:
   debian-package:
-    name: "Build debian packages"
+    name: "Build debian package"
     runs-on: ubuntu-latest
     container:
       image: "debian:latest"

.github/workflows/test-debian.yml

@@ -0,0 +1,30 @@
+name: Test building debian package
+
+on: pull_request
+
+env:
+  DEBIAN_FRONTEND: noninteractive
+
+jobs:
+  debian-package:
+    name: "Build debian package"
+    runs-on: ubuntu-latest
+    container:
+      image: "debian:latest"
+    steps:
+      - name: Install dependencies
+        run: |
+          apt-get update
+          apt-get -y upgrade
+          apt-get -y install devscripts dpkg-dev debhelper equivs
+      - name: Checkout repo
+        uses: actions/checkout@v2
+      - name: Bump version
+        run: |
+          export DEBEMAIL='maintainers@faucet.nz'
+          export DEBFULLNAME='Faucet Maintainers'
+          debchange -b "Test release"
+      - name: Build package
+        run: |
+          mk-build-deps -i -r -t 'apt-get -f -y --force-yes'
+          dpkg-buildpackage -b -us -uc -rfakeroot