diff --git a/app/app/settings.py b/app/app/settings.py
index 89ad978..7f73f3d 100644
--- a/app/app/settings.py
+++ b/app/app/settings.py
@@ -76,10 +76,10 @@
 DATABASES = {
     'default': {
         'ENGINE': 'django.db.backends.postgresql',
-        'HOST': os.environment.get('DB_HOST'),
-        'NAME': os.environment.get('DB_NAME'),
-        'USER': os.environment.get('DB_USER'),
-        'PASSWORD': os.environment.get('DB_PASS'),
+        'HOST': os.environ.get('DB_HOST'),
+        'NAME': os.environ.get('DB_NAME'),
+        'USER': os.environ.get('DB_USER'),
+        'PASSWORD': os.environ.get('DB_PASS'),
     }
 }
 
diff --git a/app/core/__init__.py b/app/core/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/app/core/admin.py b/app/core/admin.py
new file mode 100644
index 0000000..8c38f3f
--- /dev/null
+++ b/app/core/admin.py
@@ -0,0 +1,3 @@
+from django.contrib import admin
+
+# Register your models here.
diff --git a/app/core/apps.py b/app/core/apps.py
new file mode 100644
index 0000000..8115ae6
--- /dev/null
+++ b/app/core/apps.py
@@ -0,0 +1,6 @@
+from django.apps import AppConfig
+
+
+class CoreConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'core'
diff --git a/app/core/migrations/__init__.py b/app/core/migrations/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/app/core/models.py b/app/core/models.py
new file mode 100644
index 0000000..71a8362
--- /dev/null
+++ b/app/core/models.py
@@ -0,0 +1,3 @@
+from django.db import models
+
+# Create your models here.
diff --git a/app/core/tests.py b/app/core/tests.py
new file mode 100644
index 0000000..7ce503c
--- /dev/null
+++ b/app/core/tests.py
@@ -0,0 +1,3 @@
+from django.test import TestCase
+
+# Create your tests here.
diff --git a/app/core/views.py b/app/core/views.py
new file mode 100644
index 0000000..91ea44a
--- /dev/null
+++ b/app/core/views.py
@@ -0,0 +1,3 @@
+from django.shortcuts import render
+
+# Create your views here.
diff --git a/docker-compose.yml b/docker-compose.yml
index 1ccb2bd..9c19da1 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -16,7 +16,7 @@ services:
       - DB_HOST=db
       - DB_NAME=devdb
       - DB_USER=devuser
-      - DB_PASSWORD=changeme
+      - DB_PASS=changeme
     depends_on:
       - db