public JibContainerBuilder addExposedPort(Port port) {
    containerBuildPlanBuilder.addExposedPort(port);
    containerConfigurationBuilder.addExposedPort(port);
    return this;
  }
Adds a port to expose from the container.

@param port the port to expose
@return this
@see #setExposedPorts(Set)
jib-core/src/main/java/com/google/cloud/tools/jib/api/JibContainerBuilder.java