public Containerizer setToolName(String toolName) {
    this.toolName = toolName;
    return this;
  }
Sets the name of the tool that is using Jib Core. The tool name is sent as part of the {@code
User-Agent} in registry requests and set as the {@code created_by} in the container layer
history. Defaults to {@code jib-core}.

@param toolName the name of the tool using this library
@return this
jib-core/src/main/java/com/google/cloud/tools/jib/api/Containerizer.java