Solution

.dockerignore

@@ -0,0 +1,13 @@
+.idea/
+.vscode/
+*.iml
+.env
+.DS_Store
+.venv/
+.pytest_cache/
+**__pycache__/
+README.md
+checklist.md
+.gitignore
+**db.sqlite3
+media

.env_example

@@ -0,0 +1,5 @@
+POSTGRES_DB=
+POSTGRES_USER=
+POSTGRES_PASSWORD=
+DB_HOST=
+DB_PORT=

.gitignore

@@ -3,7 +3,7 @@
 *.iml
 .env
 .DS_Store
-venv/
+.venv/
 .pytest_cache/
 **__pycache__/
 **db.sqlite3

Dockerfile

@@ -0,0 +1,18 @@
+FROM python:3.12-slim
+
+WORKDIR /app
+
+COPY requirements.txt .
+RUN pip install -r requirements.txt
+
+COPY . .
+
+RUN adduser \
+    --disabled-password \
+    --no-create-home \
+    django-user
+
+RUN mkdir -p /vol/web/media
+RUN mkdir -p /vol/web/static
+
+RUN chown -R django-user:django-user /vol/

cinema_service/settings.py

@@ -11,6 +11,7 @@
 """
 from datetime import timedelta
 from pathlib import Path
+import os
 
 # Build paths inside the project like this: BASE_DIR / 'subdir'.
 BASE_DIR = Path(__file__).resolve().parent.parent
@@ -86,8 +87,12 @@
 
 DATABASES = {
     "default": {
-        "ENGINE": "django.db.backends.sqlite3",
-        "NAME": BASE_DIR / "db.sqlite3",
+        "ENGINE": "django.db.backends.postgresql",
+        "NAME": os.getenv("POSTGRES_DB"),
+        "USER": os.getenv("POSTGRES_USER"),
+        "PASSWORD": os.getenv("POSTGRES_PASSWORD"),
+        "HOST": "db",
+        "PORT": "5432",
     }
 }
 
@@ -131,10 +136,11 @@
 # Static files (CSS, JavaScript, Images)
 # https://docs.djangoproject.com/en/4.0/howto/static-files/
 
-STATIC_URL = "static/"
+STATIC_URL = "/static/"
+STATIC_ROOT = "/vol/web/static"
 
 MEDIA_URL = "/media/"
-MEDIA_ROOT = BASE_DIR / "media"
+MEDIA_ROOT = "/vol/web/media"
 
 # Default primary key field type
 # https://docs.djangoproject.com/en/4.0/ref/settings/#default-auto-field

docker-compose.yml

@@ -0,0 +1,33 @@
+version: "1"
+
+services:
+  app:
+    build:
+      context: .
+    ports:
+      - "8000:8000"
+    command: >
+      sh -c "python manage.py wait_for_db &&
+             python manage.py migrate &&
+             python manage.py collectstatic --noinput &&
+             python manage.py runserver 0.0.0.0:8000"
+    env_file:
+      - .env
+    depends_on:
+      - db
+    volumes:
+      - .:/app
+
+  db:
+    image: postgres:14-alpine
+    ports:
+      - "5433:5432"
+    env_file:
+      - .env
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+
+volumes:
+  postgres_data:
+  media_data:
+  static_data:

requirements.txt

@@ -8,3 +8,4 @@ djangorestframework
 djangorestframework-simplejwt
 drf-spectacular
 Pillow
+psycopg2-binary

user/management/commands/wait_for_db.py

@@ -0,0 +1,21 @@
+import time
+from django.db import connections
+from django.db.utils import OperationalError
+from django.core.management.base import BaseCommand
+
+
+class Command(BaseCommand):
+    def handle(self, *args, **options):
+        self.stdout.write("Waiting for database...")
+
+        db_conn = None
+
+        while not db_conn:
+            try:
+                db_conn = connections["default"]
+                db_conn.cursor()
+            except OperationalError:
+                self.stdout.write("Database unavailable, waiting 1 sec...")
+                time.sleep(1)
+
+        self.stdout.write(self.style.SUCCESS("Database available!"))