make install APP=phpunit.it
make remove APP=phpunit.it
service dovecot restart
COPY .ssh/id_ed25519.pub /home/$user/.ssh/
COPY .ssh/id_ed25519 /home/$user/.ssh/
RUN chown -R $user:$user /home/$user/.ssh/
Turns out when using Ubuntu, the ssh_config isn't correct. You need to add
RUN echo " IdentityFile ~/.ssh/id_rsa" >> /etc/ssh/ssh_config
to your Dockerfile in order to get it to recognize your ssh key.