read port from env file

Author: liddiard

Diff for: .env.example

@@ -10,6 +10,7 @@ DJANGO_SUPERUSER_EMAIL=
 DJANGO_SUPERUSER_PASSWORD=
 
 # REQUIRED app enviornment variables
+PORT=8000
 SECRET_KEY=
 SLACK_API_TOKEN=
 SLACK_SIGNING_SECRET=

Diff for: Dockerfile

@@ -36,4 +36,4 @@ COPY entrypoint.sh /app/entrypoint.sh
 RUN chmod +x /app/entrypoint.sh
 
 # Expose the port that the Gunicorn server will run on
-EXPOSE 8000
+EXPOSE $PORT

Diff for: docker-compose.yml

@@ -10,7 +10,7 @@ services:
     env_file:
       - .env
     ports:
-      - "8000:8000"
+      - "${PORT}:${PORT}"
     depends_on:
       - rabbitmq
       - celery

Diff for: entrypoint.sh

@@ -16,4 +16,4 @@ python manage.py createsuperuser --no-input
 service cron start
 
 # Start Gunicorn server
-exec gunicorn meetups.wsgi:application --bind 0.0.0.0:8000
+exec gunicorn meetups.wsgi:application --bind 0.0.0.0:$PORT