Testing build on 18.04, 22.04 and 24.04

.github/workflows/ci.yml

@@ -18,7 +18,7 @@ jobs:
   build-ubuntu:
     strategy:
       matrix:
-        platform: [ubuntu-latest, ubuntu-20.04]
+        platform: [ubuntu-18.04, ubuntu-20.04, ubuntu-22.04, ubuntu-24.04, ubuntu-latest]
     name: Build ${{ matrix.platform }}
     env:
       # https://github.blog/changelog/2024-03-07-github-actions-all-actions-will-run-on-node20-instead-of-node16-by-default/
@@ -53,6 +53,7 @@ jobs:
         sudo service redis-server stop
 
     - name: Increase connection limit
+      if: matrix.platform == 'ubuntu-latest'
       run: |
         sudo sysctl -w net.ipv4.tcp_fin_timeout=10
         sudo sysctl -w net.ipv4.tcp_tw_reuse=1