Solution

.dockerignore

@@ -0,0 +1,12 @@
+.idea/
+.vscode/
+*.iml
+.env
+.DS_Store
+.gitignore
+.git
+venv/
+.pytest_cache/
+**__pycache__/
+Dockerfile
+docker-compose.yml

Dockerfile

@@ -0,0 +1,22 @@
+FROM python:3.12.13-slim
+LABEL maintainer="illaredka8@gmail.com"
+
+ENV PYTHONUNBUFFERED=1
+
+WORKDIR /app
+
+COPY requirements.txt requirements.txt
+RUN pip install -r requirements.txt
+
+COPY . .
+RUN mkdir -p /files/media
+
+RUN adduser \
+    --disabled-password \
+    --no-create-home \
+    my_user
+
+RUN chown -R my_user /files/media
+RUN chmod -R 755 /files/media
+
+USER my_user

cinema/management/commands/wait_for_db.py

@@ -0,0 +1,23 @@
+import time
+
+from django.core.management.base import BaseCommand
+from django.db import connections
+from django.db.utils import OperationalError
+
+
+class Command(BaseCommand):
+    help = "Wait for database to be available"  # noqa: VNE003
+
+    def handle(self, *args, **options):
+        self.stdout.write("Waiting for database...")
+
+        db_ready = False
+        while not db_ready:
+            try:
+                connections["default"].ensure_connection()
+                db_ready = True
+            except OperationalError:
+                self.stdout.write("Database unavailable, waiting 1 second...")
+                time.sleep(1)
+
+        self.stdout.write(self.style.SUCCESS("Database available!"))

cinema_service/settings.py

@@ -9,6 +9,7 @@
 For the full list of settings and their values, see
 https://docs.djangoproject.com/en/4.0/ref/settings/
 """
+import os
 from datetime import timedelta
 from pathlib import Path
 
@@ -86,8 +87,12 @@
 
 DATABASES = {
     "default": {
-        "ENGINE": "django.db.backends.sqlite3",
-        "NAME": BASE_DIR / "db.sqlite3",
+        "ENGINE": "django.db.backends.postgresql",
+        "NAME": os.environ["POSTGRES_DB"],
+        "USER": os.environ["POSTGRES_USER"],
+        "PASSWORD": os.environ["POSTGRES_PASSWORD"],
+        "HOST": os.environ["POSTGRES_HOST"],
+        "PORT": os.environ["POSTGRES_PORT"],
     }
 }
 
@@ -134,7 +139,7 @@
 STATIC_URL = "static/"
 
 MEDIA_URL = "/media/"
-MEDIA_ROOT = BASE_DIR / "media"
+MEDIA_ROOT = "/files/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 @@
+services:
+  app:
+    build:
+      context: .
+    env_file:
+      - .env
+    ports:
+      - "8000:8000"
+    command: >
+      sh -c "python manage.py wait_for_db &&
+            python manage.py migrate &&
+            python manage.py runserver 0.0.0.0:8000"
+    volumes:
+      - ./:/app
+      - my_media:/files/media
+    depends_on:
+      - db
+
+
+  db:
+    image: postgres:16.0-alpine3.17
+    restart: always
+    env_file:
+      - .env
+    ports:
+      - "5432:5432"
+    volumes:
+      - my_db:$PGDATA
+
+
+volumes:
+  my_db:
+  my_media:

requirements.txt

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