ejabberd/data/conf/entrypoint.sh

# If there is no ejabberd.yml copy it from the template
# and set hostname and IP as per the variables set in .env
[ ! -f ~/conf/ejabberd.yml ] \
  && envsubst < ~/conf/ejabberd.yml.template > ~/conf/ejabberd.yml

# Run ejabberdctl as done in the original entrypoint from the dockerfile
/home/ejabberd/bin/ejabberdctl "$@"