Change dash --> underscore for docker_network & docker_sandbox (#25)

* s/-/_/ for folders docker_network & docker_sandbox

* move  and  folders under top-level  folder

* Add packages

Co-authored-by: Mike Z <[email protected]>

Author: MIKE-ZW

docker-network/BUILD renamed to docker/network/BUILD

@@ -11,6 +11,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
+package docker.network;
 
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;

docker-network/DockerNetworkTest.java renamed to docker/network/DockerNetworkTest.java

@@ -1,3 +1,5 @@
+package docker.sandbox;
+
 public class Hello {
   public static void main(String[] args) {
     System.out.println("Hello Java!");