Hi ! Has anyone got this error while trying to build egress ?

Step 5/10 : COPY compile /
 ---> 928836eb219f
Step 6/10 : RUN /compile
 ---> Running in f04ffa3b87c6
/compile: line 4: NINJA_OPTS: unbound variable
The command '/bin/sh -c /compile' returned a non-zero code: 1
Error: exit status 1