Add entrypoint script with wait function for db.

app/Dockerfile

@@ -17,4 +17,10 @@ RUN pipenv install --skip-lock --system --dev
 # copy project
 COPY . /usr/src/app/
 
+# add wait for it
+RUN git clone https://github.com/vishnubob/wait-for-it.git /wait-for-it
+RUN chmod a+x /wait-for-it/wait-for-it.sh
 
+# add entry point
+ADD ./django-entrypoint.sh /django-entrypoint.sh
+RUN chmod a+x /django-entrypoint.sh

app/django-entrypoint.sh

@@ -0,0 +1,6 @@
+#!/bin/bash -x
+
+python manage.py collectstatic --noinput
+python manage.py makemigrations --noinput
+python manage.py migrate --noinput
+exec "$@"

docker-compose.yml

@@ -3,7 +3,6 @@ version: '3.7'
 services:
   web:
     build: ./app
-    command: gunicorn bundesdata_app.wsgi:application --bind 0.0.0.0:8000
     volumes:
       - ./app/:/usr/src/app/
       - ./input_volume/:/usr/src/app/input_data
@@ -12,12 +11,13 @@ services:
       - 8000
     depends_on:
       - db
+    command: bash -c "/wait-for-it/wait-for-it.sh db:5432 --strict --timeout=0 -- bash django-entrypoint.sh && gunicorn bundesdata_app.wsgi:application --bind 0.0.0.0:8000"
   db:
     image: postgres:11.2
     environment:
-            - POSTGRES_USER=databaseUserName
-            - POSTGRES_PASSWORD=totalSecurePassword
-            - POSTGRES_DB=databaseName
+            - POSTGRES_USER=bundesdata_app_user
+            - POSTGRES_PASSWORD=v3ry53cr3t
+            - POSTGRES_DB=bundesdata_db
     volumes:
       - ./postgres_data:/var/lib/postgresql/data/
   nginx: