might work now

rootfs/etc/service/postfix/run

@@ -1,5 +1,70 @@
 #!/bin/bash
+POSTFIX='/usr/sbin/postfix'
+MONITOR_INTERVAL=10 # seconds
 
-echo "postfix starting..."
+exec 2>&1
 
-exec /usr/lib/postfix/master
+if [[ ! -d /state/envdir ]]; then
+    mkdir -p /state/envdir
+    chown mastodon:mastodon /state/envdir
+fi
+
+if [[ ! -e /state/envdir/WEB_DOMAIN ]]; then
+    if [[ -n "$WEB_DOMAIN" ]]; then
+        echo "$WEB_DOMAIN" > /state/envdir/WEB_DOMAIN
+    else
+        hostname --fqdn > /state/envdir/WEB_DOMAIN
+    fi
+    chown mastodon:mastodon /state/envdir/*
+fi
+
+cat /etc/postfix/main.cf | grep -v '^myhostname' > /etc/postfix/main.new
+rm /etc/postfix/main.cf
+echo "myhostname = $(cat /state/envdir/WEB_DOMAIN)" >> /etc/postfix/main.cf
+echo "myorigin = $(cat /state/envdir/WEB_DOMAIN)" >> /etc/postfix/main.cf
+cat /etc/postfix/main.new >> /etc/postfix/main.cf
+rm /etc/postfix/main.new
+
+running() {
+  pkill -0 master
+}
+
+start() {
+  echo "postfix starting..."
+  /etc/init.d/postfix start
+}
+
+stop() {
+  if running; then
+    echo Stopping
+    /etc/init.d/postfix stop
+  fi
+}
+
+reload() {
+  echo Reloading
+  /etc/init.d/postfix reload
+}
+
+check() {
+  echo Checking
+  "$POSTFIX" check
+}
+
+status() {
+  "$POSTFIX" status
+}
+
+
+trap 'echo INT; stop; exit' INT
+trap 'echo QUIT; stop; exit' QUIT
+trap 'echo TERM; stop; exit' TERM
+trap 'echo STOP; stop' STOP
+trap 'echo HUP; reload' HUP
+trap 'echo USR1; check' USR1
+trap 'echo USR2; status' USR2
+
+while :; do
+  running || start
+  sleep $MONITOR_INTERVAL
+done

rootfs/etc/service/postgres/run

@@ -2,7 +2,28 @@
 
 echo "postgres starting..."
 
-mkdir -p /state/db
-chown mastodon:mastodon /state/db
-exec chpst -u mastodon:mastodon /usr/lib/postgresql/bin/postmaster \
-   -D /state/db 2>&1
+chown mastodon:mastodon /var/run/postgresql
+chown -R mastodon:mastodon /etc/postgresql
+
+echo "local all all peer" > /etc/postgresql/10/main/pg_hba.conf
+echo "local all mastodon peer" >> /etc/postgresql/10/main/pg_hba.conf
+echo "local all root peer" >> /etc/postgresql/10/main/pg_hba.conf
+echo "host all all 127.0.0.0/8 trust" >> /etc/postgresql/10/main/pg_hba.conf
+
+if [[ ! -d /state/db ]]; then
+    mkdir -p /state/db/data
+    rsync -a /var/lib/postgresql/10/main/ /state/db/data/
+    cp -a /etc/postgresql/10/main/* /state/db/
+    grep -v '^data_directory' /state/db/postgresql.conf |
+        grep -v "^ssl" |
+        grep -v "^stats_temp_directory" > /state/db/postgresql.new
+    echo "data_directory = '/state/db/data'" >> /state/db/postgresql.new
+    echo "stats_temp_directory = '/tmp'" >> /state/db/postgresql.new
+    mv /state/db/postgresql.new /state/db/postgresql.conf
+    chown -R mastodon:mastodon /state/db
+    chmod go-rwx /state/db/data
+fi
+
+exec \
+    chpst -u mastodon:mastodon \
+    /usr/lib/postgresql/10/bin/postmaster -D /state/db 2>&1

rootfs/etc/service/redis/run

@@ -2,4 +2,11 @@
 
 mkdir -p /state/redis
 chown mastodon:mastodon /state/redis
-exec chpst -u mastodon:mastodon /usr/bin/redis-server /etc/redis/redis.conf
+exec chpst -u mastodon:mastodon /usr/bin/redis-server - <<EOF
+daemonize no
+dir /state/redis
+save 900 1
+save 300 10
+save 60 10000
+EOF
+

rootfs/etc/service/sidekiq/run

@@ -11,4 +11,4 @@ cd /mastodon/app
 exec \
     envdir /state/envdir \
     chpst -u mastodon:mastodon \
-    bash -c "bundle exec sidekiq -c $SIDEKIQ_WORKERS -q default -q push -q pull -q mailers"
+    bash -i -c "bundle exec sidekiq -c $SIDEKIQ_WORKERS -q default -q push -q pull -q mailers"

rootfs/etc/service/startup/run

@@ -5,18 +5,43 @@ echo "mastodon-startup starting up..."
 
 if [[ ! -d /state/envdir ]]; then
     mkdir -p /state/envdir
-    chown mastodon:mastodon /state/envdir
 fi
 
 if [[ ! -e /state/envdir/HOME ]]; then
     echo "/mastodon" > /state/envdir/HOME
 fi
 
+if [[ ! -e /state/envdir/RAILS_ENV ]]; then
+    echo "production" > /state/envdir/RAILS_ENV
+fi
+
+chown mastodon:mastodon /state/envdir /state/envdir/*
+
 cd /mastodon/app
 
-if [ "$RUN_DB_MIGRATIONS" == "true" ]; then
+if [[ ! -e /state/envdir/OTP_SECRET ]]; then
+  envdir /state/envdir \
+      chpst -u mastodon:mastodon \
+      bash -i -c "bundle exec rake secret > /state/envdir/OTP_SECRET"
+fi
+
+if [[ ! -e /state/envdir/SECRET_KEY_BASE ]]; then
+  envdir /state/envdir \
+      chpst -u mastodon:mastodon \
+      bash -i -c "bundle exec rake secret > /state/envdir/SECRET_KEY_BASE"
+fi
+
+echo "
+    create database mastodon_production;
+    create user mastodon createdb;
+    grant all privileges on database mastodon_production to mastodon;
+" | chpst -u postgres:postgres psql
+
+if [[ -n "$RUN_DB_MIGRATIONS" ]]; then
   echo "Running database migrations..."
-  envdir /state/envdir chpst -u mastodon:mastodon bash -c "bundle exec rake db:migrate"
+  envdir /state/envdir \
+      chpst -u mastodon:mastodon \
+      bash -i -c "bundle exec rake db:migrate"
 fi
 
 rm /state/.starting

rootfs/etc/service/streaming/run

@@ -8,4 +8,7 @@ done
 echo "streaming starting..."
 
 cd /mastodon/app
-exec envdir /state/envdir chpst -u mastodon:mastodon bash -c "npm run start"
+exec \
+    envdir /state/envdir \
+    chpst -u mastodon:mastodon \
+    bash -i -c "npm run start"

rootfs/etc/service/web/run

@@ -8,4 +8,7 @@ done
 echo "web starting..."
 
 cd /mastodon/app
-exec envdir /state/envdir chpst -u mastodon:mastodon bash -c "bundle exec puma -C config/puma.rb"
+exec \
+    envdir /state/envdir \
+    chpst -u mastodon:mastodon \
+    bash -i -c "bundle exec puma -C config/puma.rb"