Update

Dockerfile

 FROM debian:stable-slim
 
-RUN echo 'export http_proxy=http://$(ip route list exact 0.0.0.0/0 | head -1 | cut -d" " -f3):3142/' >> /etc/profile
+ENV PATH /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
+ENV HOME /
 
 ARG BUILDDEPS
 RUN \
         git \
         ${BUILDDEPS}
 
-CMD ["bash", "-c", "pwd; echo $PATH"]
+CMD ["bash"]