Add check-build-system and a new workflow (#14)

.github/workflows/test_all_workers.yaml

@@ -0,0 +1,21 @@
+name: Test All Workers
+
+on: [workflow_dispatch]
+
+jobs:
+  HP-DL360G6-1:
+    name: "HP-DL360G6-1 build"
+    runs-on: [HP-DL360G6-1]
+    timeout-minutes: 10
+
+    steps:
+      - name: Set up repository
+        uses: actions/checkout@v2
+        with:
+          # Number of commits to fetch. `0` indicates all history for all
+          # branches and tags. (default: 1)
+          fetch-depth: 0
+
+      - name: Check the system
+        run: |
+          ./tools/check-build-system

tools/check-build-system

@@ -0,0 +1,19 @@
+#!/bin/bash -e
+
+tools=(
+  go
+  dotnet
+  npm
+  node
+  java
+  javac
+  mono
+  mcs
+  virtualenv
+)
+
+for tool in ${tools[@]}; do
+  if ! which $tool >/dev/null; then
+    echo "$tool not installed!"
+  fi
+done;