Dockefile of CLI is based on Java 11 (#963)

Author: viktoriia-fomina

docker/Dockerfile_java_cli

@@ -1,4 +1,4 @@
-FROM openjdk:8
+FROM azul/zulu-openjdk:11.0.15-11.56.19
 
 ARG UTBOT_JAVA_CLI
 
@@ -9,4 +9,4 @@ WORKDIR /usr/src/
 COPY ${UTBOT_JAVA_CLI} .
 
 RUN UTBOT_JAVA_CLI_PATH="$(find /usr/src -type f -name 'utbot-cli*')" \
-    && ln -s "${UTBOT_JAVA_CLI_PATH}" /usr/src/utbot-cli.jar
+    && ln -s "${UTBOT_JAVA_CLI_PATH}" /usr/src/utbot-cli.jar