chore(qa): add PocoDoc to packages-qa.yml

.github/workflows/packages-qa.yml

@@ -8,6 +8,23 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
+  mkdoc:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v2
+      -
+        name: Install packages
+        run: sudo apt -y update && sudo apt -y install libssl-dev unixodbc-dev redis-server libmysqlclient-dev libpq-dev
+      -
+        name: Build documentation
+        run: |
+          export POCO_BASE=`pwd`
+          export PATH=$POCO_BASE/release/script:$PATH
+          export LD_LIBRARY_PATH=$POCO_BASE/stage/tools/lib/Linux/x86_64
+          mkdoc all
+
   mkrelease_win:
     runs-on: ubuntu-latest
     steps: