Lots of changes

entrypoint

@@ -0,0 +1,45 @@
+#!/bin/sh
+
+set -o errexit
+set -o pipefail
+set -o nounset
+
+
+
+
+if [ -z "${POSTGRES_USER}" ]; then
+    base_postgres_image_default_user='postgres'
+    export POSTGRES_USER="${base_postgres_image_default_user}"
+fi
+
+postgres_ready() {
+python << END
+import sys
+
+import psycopg2
+
+try:
+    psycopg2.connect(
+        dbname="${POSTGRES_DB}",
+        user="${POSTGRES_USER}",
+        password="${POSTGRES_PASSWORD}",
+        host="${POSTGRES_HOST}",
+        port="${POSTGRES_PORT}",
+    )
+except psycopg2.OperationalError:
+    sys.exit(-1)
+sys.exit(0)
+
+END
+}
+until postgres_ready; do
+  >&2 echo 'Waiting for PostgreSQL to become available...'
+  sleep 1
+done
+>&2 echo 'PostgreSQL is available'
+
+python manage.py collectstatic --noinput
+python manage.py makemigrations
+python manage.py migrate
+
+/usr/bin/supervisord -c /etc/supervisor/supervisord.conf