entry point for Django application

entrypoint.sh

#!/bin/bash
set -e

cmd="$@"

function postgres_ready(){
python << END
import sys
import psycopg2
try:
#    conn = psycopg2.connect(dbname="$POSTGRES_USER", user="$POSTGRES_USER", password="$POSTGRES_PASSWORD", host="postgres")
    conn = psycopg2.connect(dbname="postgres", user="postgres", password="", host="db")
except psycopg2.OperationalError:
    sys.exit(-1)
sys.exit(0)
END
}

until postgres_ready; do
  >&2 echo "Postgres is unavailable - sleeping"
  sleep 1
done

>&2 echo "Postgres is up - continuing..."

# export REDIS_URL=redis://redis:6379/0
export DATABASE_URL=postgres://postgres:@db:5432/postgres
exec $cmd