Docker build failed

[gussmith23]

Running the docker build fails (even after my PR #30):

fortyfort ➜  VossII git:(master) ✗ make -C src docker_package                                                                                  

docker build -t vossii-static-builder ..
[+] Building 69.9s (8/8) FINISHED                                                                                                     docker:desktop-linux
 => [internal] load .dockerignore                                                                                                                     0.0s
 => => transferring context: 2B                                                                                                                       0.0s
 => [internal] load build definition from Dockerfile                                                                                                  0.0s
 => => transferring dockerfile: 362B                                                                                                                  0.0s
 => [internal] load metadata for docker.io/library/debian:buster                                                                                      0.7s
 => [auth] library/debian:pull token for registry-1.docker.io                                                                                         0.0s
 => CACHED [1/3] FROM docker.io/library/debian:buster@sha256:f6b3b7c7b049c2c7d0f19ae988b4eac64fd8e127fa891c9de1d3cf3f8c33cad4                         0.0s
 => [2/3] RUN apt-get update &&     apt-get -y install gcc g++ doxygen flex bison gawk                        libz-dev tcl-dev tk-dev libc6-dev ima  62.9s
 => [3/3] WORKDIR /vossroot/src                                                                                                                       0.1s 
 => exporting to image                                                                                                                                6.1s 
 => => exporting layers                                                                                                                               6.1s 
 => => writing image sha256:976986b3fc15f5a6677a8d6d895ff841f6baa075254fca93d7628dcb9c67e74d                                                          0.0s 
 => => naming to docker.io/library/vossii-static-builder                                                                                              0.0s 
                                                                                                                                                           
What's Next?
  View a summary of image vulnerabilities and recommendations → docker scout quickview
docker run --user `stat --printf "%u:%g" .` -v `pwd`/..:/vossroot vossii-static-builder
stat: illegal option -- -
usage: stat [-FLnq] [-f format | -l | -r | -s | -x] [-t timefmt] [file ...]
docker: invalid reference format: repository name must be lowercase.
See 'docker run --help'.
make: *** [docker_package] Error 125