Grpcio arm compilation fix

[phutelmyer]

Describe the change
This change reflects issue #187, a failure to compile the mmrpc image due to a compilation issue with grpcio. Adding the build-essentials package fixes this issue.

Describe testing procedures

1. Built container (with PyMuPDF removed - PDF Scanner - See Compilation Issues (pymupdf dependency) on Apple M1 (ARM) #188 for that issue)
2. Allow cluster to run for 10+ minutes while submitting several different filetypes with fileshot.

Sample output
N/A

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of and tested my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings