bind to 0.0.0.0 not localhost

Dockerfile

@@ -31,7 +31,11 @@ RUN bash /tmp/prereqs.sh
 ADD install.sh /tmp/install.sh
 
 WORKDIR /mastodon
+
 ENV HOME /mastodon
+
+ENV BIND 0.0.0.0
+
 RUN chpst -u mastodon:mastodon bash /tmp/install.sh
 
 ADD ./rootfs /

rootfs/etc/service/web/run

@@ -50,6 +50,5 @@ exec \
     envdir /state/envdir \
     chpst -u mastodon:mastodon \
     bash -i -c "
-        BIND=0.0.0.0
         bundle exec puma -C config/puma.rb
     "