added hosts to runner, uncommented affected tests

.gitlab-ci.yml

@@ -2,8 +2,6 @@ before_script:
   - "docker version"
   - "docker-compose version"
   - "mvn --version"
-  - "echo ${HOSTALIASES}"
-  - "cat ${HOSTALIASES}"
 
 variables:
   HOSTALIASES: ./hosts

hosts → .gitlab-ci/hosts

+# Add these addresses to your /etc/hosts file to pass the Docker name resolution during testing
 172.28.0.5  fda-userdb-u01
 172.28.0.6  fda-userdb-u02
\ No newline at end of file

fda-database-service/rest-service/src/test/java/at/tuwien/service/ServiceIntegrationTest.java

@@ -147,7 +147,6 @@ public class ServiceIntegrationTest extends BaseUnitTest {
     }
 
     @Test
-    @Disabled("Cannot test docker hostname in maven")
     public void create_postgres_succeeds() throws ImageNotSupportedException, ContainerNotFoundException,
             DatabaseMalformedException, SQLException {
         final DatabaseCreateDto request = DatabaseCreateDto.builder()
@@ -215,7 +214,6 @@ public class ServiceIntegrationTest extends BaseUnitTest {
     }
 
     @Test
-    @Disabled("Cannot test docker hostname in maven")
     public void delete_succeeds() throws DatabaseNotFoundException, ImageNotSupportedException,
             DatabaseMalformedException {
 
@@ -251,7 +249,6 @@ public class ServiceIntegrationTest extends BaseUnitTest {
     }
 
     @Test
-    @Disabled("Cannot test docker hostname in maven")
     public void modify_succeeds() throws DatabaseNotFoundException, ImageNotSupportedException,
             DatabaseMalformedException {
         final DatabaseModifyDto request = DatabaseModifyDto.builder()