public JibContainerBuilder addPlatform(String architecture, String os) {
    containerBuildPlanBuilder.addPlatform(architecture, os);
    containerConfigurationBuilder.addPlatform(architecture, os);
    return this;
  }
Adds a desired image platform (OS and architecture pair). If the base image reference is a
Docker manifest list or an OCI image index, an image builder may select the base image matching
the given platform. If the base image reference is an image manifest, an image builder may
ignore the given platform and use the platform of the base image or may decide to raise on
error.

<p>Note that a new new container builder starts with "amd64/linux" as the default platform. If
you want to reset the default platform instead of adding a new one, use {@link
#setPlatforms(Set)}.

@param architecture architecture (for example, {@code amd64}) to select a base image in case of
    a manifest list
@param os OS (for example, {@code linux}) to select a base image in case of a manifest list
@return this
jib-core/src/main/java/com/google/cloud/tools/jib/api/JibContainerBuilder.java