Moved ARG below FROM (otherwise they are ignored)

docker/Dockerfile_test

 ARG GCP_HOST
-
 ARG GCP_PROJECT_ID
-
 ARG CI_COMMIT_SHORT_SHA
 
 #FROM $GCP_HOST/$GCP_PROJECT_ID/build-img:$CI_COMMIT_SHORT_SHA
 FROM build-img:$CI_COMMIT_SHORT_SHA
 
-ENV MONGO_MONGODB_SERVICE_HOST mongo-server-12345qwerty
-ENV MONGODB_ROOT_PASSWORD root
-
-MAINTAINER bob2
+ARG MONGODB_ROOT_PASSWORD
+ARG MONGO_MONGODB_SERVICE_HOST
 
 RUN sed -i 's/spring.data.mongodb.host=localhost/spring.data.mongodb.host='"$MONGO_MONGODB_SERVICE_HOST"'/g' /src/main/resources/application.properties
-
 RUN sed -i 's/# Mongo/# Mongo\nspring.data.mongodb.username=root\nspring.data.mongodb.password='"$MONGODB_ROOT_PASSWORD"'\nspring.data.mongodb.authentication-database=admin/g' /src/main/resources/application.properties
 
-ENV CI_COMMIT_SHORT_SHA bobbb
-
-RUN echo $MONGO_MONGODB_SERVICE_HOST
-
-RUN grep -i mongo /src/main/resources/application.properties
-
 RUN gradle test