solution

.dockerignore

@@ -0,0 +1,12 @@
+venv/
+venv
+.venv
+__pycache__
+__pycache__/
+*.pyc
+.git
+.git/
+.env
+db.sqlite3
+.db.sqlite3
+.flake8

Dockerfile

@@ -0,0 +1,26 @@
+FROM python:3.10-alpine
+
+ENV PYTHONDONTWRITEBYTECODE=1
+ENV PYTHONUNBUFFERED=1
+
+WORKDIR /app
+
+RUN apk add --update --no-cache postgresql-client jpeg-dev \
+    && apk add --update --no-cache --virtual .tmp-build-deps \
+        build-base postgresql-dev musl-dev zlib zlib-dev
+
+COPY requirements.txt /app/
+
+RUN pip install --no-cache-dir -r requirements.txt \
+    && apk del .tmp-build-deps
+
+COPY . /app/
+
+RUN mkdir -p /vol/web/media \
+    && mkdir -p /vol/web/static \
+    && adduser -D django-user \
+    && chown -R django-user:django-user /vol/ \
+    && chown -R django-user:django-user /app/ \
+    && chmod -R 755 /vol
+
+USER django-user

cinema/management/commands/wait_for_db.py

@@ -0,0 +1,22 @@
+import time
+from psycopg2 import OperationalError as Psycopg2OpError
+
+from django.db.utils import OperationalError
+from django.core.management.base import BaseCommand
+
+
+class Command(BaseCommand):
+    """Django command to pause execution until database is available"""
+
+    def handle(self, *args, **options):
+        self.stdout.write('Waiting for database...')
+        db_up = False
+        while not db_up:
+            try:
+                self.check(databases=['default'])
+                db_up = True
+            except (OperationalError, Psycopg2OpError):
+                self.stdout.write('Database unavailable, waiting 1 second...')
+                time.sleep(1)
+
+        self.stdout.write(self.style.SUCCESS('Database available!'))

cinema_service/settings.py

@@ -10,6 +10,7 @@
 https://docs.djangoproject.com/en/4.0/ref/settings/
 """
 from datetime import timedelta
+import os
 from pathlib import Path
 
 # Build paths inside the project like this: BASE_DIR / 'subdir'.
@@ -27,7 +28,7 @@
 # SECURITY WARNING: don't run with debug turned on in production!
 DEBUG = True
 
-ALLOWED_HOSTS = []
+ALLOWED_HOSTS = ["127.0.0.1", "localhost", "0.0.0.0"]
 
 INTERNAL_IPS = [
     "127.0.0.1",
@@ -86,8 +87,12 @@
 
 DATABASES = {
     "default": {
-        "ENGINE": "django.db.backends.sqlite3",
-        "NAME": BASE_DIR / "db.sqlite3",
+        "ENGINE": "django.db.backends.postgresql",
+        "NAME": os.environ.get("POSTGRES_DB", "postgres"),
+        "USER": os.environ.get("POSTGRES_USER", "postgres"),
+        "PASSWORD": os.environ.get("POSTGRES_PASSWORD", "postgres"),
+        "HOST": os.environ.get("POSTGRES_HOST", "db"),
+        "PORT": os.environ.get("POSTGRES_PORT", "5432"),
     }
 }
 
@@ -132,9 +137,10 @@
 # https://docs.djangoproject.com/en/4.0/howto/static-files/
 
 STATIC_URL = "static/"
+STATIC_ROOT = os.environ.get("STATIC_ROOT", BASE_DIR / "static")
 
 MEDIA_URL = "/media/"
-MEDIA_ROOT = BASE_DIR / "media"
+MEDIA_ROOT = os.environ.get("MEDIA_ROOT", BASE_DIR / "media")
 
 # Default primary key field type
 # https://docs.djangoproject.com/en/4.0/ref/settings/#default-auto-field

cmd_out.txt

@@ -0,0 +1,4 @@
+time="2026-03-20T15:38:47+02:00" level=warning msg="D:\\pythonProject\\py-dockerize-cinema\\docker-compose.yml: the attribute `version` is obsolete, it will be ignored, please remove it to avoid potential confusion"
+ Image py-dockerize-cinema-app Building 
+failed to connect to the docker API at npipe:////./pipe/dockerDesktopLinuxEngine; check if the path is correct and if the daemon is running: open //./pipe/dockerDesktopLinuxEngine: The system cannot find the file specified.
+

docker-compose.yml

@@ -0,0 +1,40 @@
+version: "3.9"
+
+services:
+  app:
+    build:
+      context: .
+    ports:
+      - "8000:8000"
+    volumes:
+      - .:/app
+      - media_data:/vol/web/media
+      - static_data:/vol/web/static
+    command: >
+      sh -c "python manage.py wait_for_db &&
+             python manage.py migrate &&
+             python manage.py runserver 0.0.0.0:8000"
+    environment:
+      - POSTGRES_DB=cinema
+      - POSTGRES_USER=postgres
+      - POSTGRES_PASSWORD=postgres
+      - POSTGRES_HOST=db
+      - POSTGRES_PORT=5432
+      - MEDIA_ROOT=/vol/web/media
+      - STATIC_ROOT=/vol/web/static
+    depends_on:
+      - db
+
+  db:
+    image: postgres:14-alpine
+    environment:
+      - POSTGRES_DB=cinema
+      - POSTGRES_USER=postgres
+      - POSTGRES_PASSWORD=postgres
+    volumes:
+      - pgdata:/var/lib/postgresql/data
+
+volumes:
+  pgdata:
+  media_data:
+  static_data:

requirements.txt

@@ -8,3 +8,4 @@ djangorestframework
 djangorestframework-simplejwt
 drf-spectacular
 Pillow
+psycopg2-binary>=2.9