Maven project docker-patch

Identified problems

testService

org.ballerinax.docker.test.utils.DockerTestException: com.spotify.docker.client.exceptions.DockerRequestException: Request error: POST unix://localhost:80/containers/ba4bbb6710ca0414dfb4f2c08951d4c97ee24a2c6ab16026b6dca7b6ccf8f42f/start: 500, body: {"message":"driver failed programming external connectivity on endpoint ballerinax_docker_sample1test (d301510de955c34937e003eed4e2d00a6d90a12ea6795f8909b03fe651fcf966): Bind for 0.0.0.0:9090 failed: port is already allocated"} at org.ballerinax.docker.test.samples.Sample1Test.testService(Sample1Test.java:65) Caused by: com.spotify.docker.client.exceptions.DockerRequestException: Request error: POST unix://localhost:80/containers/ba4bbb6710ca0414dfb4f2c08951d4c97ee24a2c6ab16026b6dca7b6ccf8f42f/start: 500, body: {"message":"driver failed programming external connectivity on endpoint ballerinax_docker_sample1test (d301510de955c34937e003eed4e2d00a6d90a12ea6795f8909b03fe651fcf966): Bind for 0.0.0.0:9090 failed: port is already allocated"} at org.ballerinax.docker.test.samples.Sample1Test.testService(Sample1Test.java:65) Caused by: javax.ws.rs.InternalServerErrorException: HTTP 500 Internal Server Error