Solution

.dockerignore

@@ -0,0 +1,8 @@
+.github/
+.venv/
+.gitignore
+README.md
+.env
+.pytest_cache/
+*.pyc
+__pycache__/

Dockerfile

@@ -0,0 +1,20 @@
+FROM python:3.11-alpine
+LABEL  maintainer="ys33ys33ys55@gmail.com"
+
+ENV PYTHONUNBUFFERED=1
+
+WORKDIR  /app/
+
+
+COPY . .
+
+RUN pip install --no-cache-dir -r requirements.txt
+
+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 +1,19 @@
+import time
+
+from django.core.management.base import BaseCommand
+from django.db import OperationalError, connection
+
+
+class Command(BaseCommand):
+    def handle(self, *args, **options):
+        self.stdout.write("Waiting for database...")
+        db_conn = None
+        while not db_conn:
+            try:
+                connection.ensure_connection()
+                db_conn = True
+            except OperationalError:
+                self.stdout.write("Database unavailable...")
+                time.sleep(1)
+
+        self.stdout.write(self.style.SUCCESS("Database available!"))

cinema/migrations/0002_alter_movie_actors_alter_movie_genres_and_more.py

@@ -0,0 +1,41 @@
+# Generated by Django 5.2.13 on 2026-04-16 13:35
+
+import django.db.models.deletion
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('cinema', '0001_initial'),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='movie',
+            name='actors',
+            field=models.ManyToManyField(blank=True, related_name='movies', to='cinema.actor'),
+        ),
+        migrations.AlterField(
+            model_name='movie',
+            name='genres',
+            field=models.ManyToManyField(blank=True, related_name='movies', to='cinema.genre'),
+        ),
+        migrations.AlterField(
+            model_name='moviesession',
+            name='cinema_hall',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='movie_sessions', to='cinema.cinemahall'),
+        ),
+        migrations.AlterField(
+            model_name='moviesession',
+            name='movie',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='movie_sessions', to='cinema.movie'),
+        ),
+        migrations.AlterField(
+            model_name='order',
+            name='user',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='orders', to=settings.AUTH_USER_MODEL),
+        ),
+    ]

cinema_service/settings.py

@@ -9,6 +9,8 @@
 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
 
@@ -27,7 +29,9 @@
 # SECURITY WARNING: don't run with debug turned on in production!
 DEBUG = True
 
-ALLOWED_HOSTS = []
+ALLOWED_HOSTS = [
+    "0.0.0.0",
+]
 
 INTERNAL_IPS = [
     "127.0.0.1",
@@ -86,8 +90,12 @@
 
 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 +142,7 @@
 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.yaml

@@ -0,0 +1,31 @@
+services:
+  app:
+    build:
+      context: .
+    env_file:
+      - .env
+    ports:
+      - "8000:8000"
+    command: >
+      sh -c "python manage.py wait_for_db &&
+            python manage.py makemigrations &&
+            python manage.py migrate &&
+            python manage.py runserver 0.0.0.0:8000"
+    volumes:
+      - 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:/var/lib/postgresql/data/
+
+volumes:
+  my_db:
+  my_media:

example.env

@@ -0,0 +1,6 @@
+POSTGRES_DB=cinema
+POSTGRES_USER=cinema
+POSTGRES_PASSWORD=cinema
+POSTGRES_HOST=db
+POSTGRES_PORT=5432
+PGDATA=/var/lib/postgresql/data/

requirements.txt

@@ -1,4 +1,6 @@
 django
+psycopg
+psycopg-binary
 flake8
 flake8-quotes
 flake8-variables-names