Issue #3217858: Support PHP7.4 for Varbase ~9.0 and all used components with automated testing

.circleci/config.yml

@@ -84,11 +84,13 @@ commands:
       - run:
           name: Install Java
           command: |
-            sudo add-apt-repository ppa:openjdk-r/ppa
-            sudo apt-get update
-            sudo apt-get -yqq install openjdk-8-jdk
-            sudo update-java-alternatives --list
-            sudo update-java-alternatives --set java-1.8.0-openjdk-amd64
+            if grep -q Debian /etc/os-release && grep -q stretch /etc/os-release; then \
+              echo 'deb http://deb.debian.org/debian stretch-backports main' | sudo tee -a /etc/apt/sources.list.d/stretch-backports.list; \
+            elif grep -q Ubuntu /etc/os-release && grep -q xenial /etc/os-release; then \
+              sudo apt-get update && sudo apt-get install -y software-properties-common && \
+              sudo add-apt-repository -y ppa:openjdk-r/ppa; \
+            fi && \
+            sudo apt-get update && sudo apt-get install -y openjdk-8-jre openjdk-8-jre-headless openjdk-8-jdk openjdk-8-jdk-headless
 
       ## List tool version.
       - run: