Switch to Eclipse Temurin Java base image due to openjdk deprecation (#2164)

Author: chgl

Dockerfile

@@ -29,8 +29,8 @@ RUN mvn package ${MAVEN_PARAMS} \
     && jar -xf WebAPI.war \
     && rm WebAPI.war
 
-# OHDSI WebAPI and ATLAS web application running as a Spring Boot application with Java 11
-FROM openjdk:8-jre-slim
+# OHDSI WebAPI and ATLAS web application running as a Spring Boot application with Java 8
+FROM index.docker.io/library/eclipse-temurin:8-jre
 
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