You can use FTP to submit your JCL batch jobs to a z/OS® system from a Linux image. When you FTP to the z/OS system, enter the site file=jes command. The FTP server on the z/OS system should rout any file that it receives to the job entry subsystem (JES) for execution. (Your login id must have sufficient authority to run DFSMSdss batch jobs, as mentioned in Obtaining authorization for Linux volumes).

Then, "put" your JCL batch jobs to the z/OS system. Save your jobs as text files that do not exceed 80 characters in length.