Trouble building the DenseFusion docker image on Ubuntu 20.04

[BundleCP]

Hi Jeremy,
I am having a trouble building the DenseFusion docker image on Ubuntu 20.04 (with Python 3.8). Step 5/8 fails because of "invalid syntax" (presumably because of a pip version mismatch?)

Step 5/8 : RUN pip3 --no-cache-dir install     numpy scipy pyyaml cffi pyyaml matplotlib Cython requests opencv-python "pillow<7"
. . .
    sys.stderr.write(f"ERROR: {exc}")
                                   ^
SyntaxError: invalid syntax

Is this a known issue? Is there a workaround?

Regards,
Cyrus