update python version in runtime.txt and Dockerfile, fix sqlalchemy 1.4.x bug

Author: eshaan7

Dockerfile

@@ -1,17 +1,19 @@
-FROM python:3.8.3-alpine3.12
+FROM python:3.9-alpine
 
 LABEL maintainer="eshaan7bansal@gmail.com"
 
 # Env
-RUN export DATABASE_URL="postgres://${DB_USER}:${DB_PASSWORD}@postgres:${DB_PORT}/${DB_NAME}" \
+RUN export DATABASE_URL="postgresql://${DB_USER}:${DB_PASSWORD}@postgres:${DB_PORT}/${DB_NAME}" \
     && export REDIS_URL="redis://redis:6379/0"
 
 # update and install packages
 RUN apk update --no-cache \
     && apk add --no-cache postgresql-dev build-base g++ libffi-dev
 
-# Add a new low-privileged user
-RUN adduser --shell /sbin/login www-data -DH
+# ensure www-data user exists (low-privileged user)
+RUN set -x ; \
+    addgroup -g 82 -S www-data ; \
+    adduser -u 82 -D -S -G www-data www-data && exit 0 ; exit 1
 
 # Install RTB-CTF-Framework
 WORKDIR /usr/src/app

docker-compose-for-tests.yml

@@ -28,9 +28,9 @@ services:
     restart: unless-stopped
     expose:
       - "6379"
-  
+
   nginx:
-    image: library/nginx:1.16.1-alpine
+    image: library/nginx:1.21-alpine
     container_name: rtb_nginx
     restart: unless-stopped
     hostname: nginx

docker-compose.yml

@@ -19,17 +19,17 @@ services:
     expose:
       - "5432"
     env_file:
-    - .env_postgres
+      - .env_postgres
 
   redis:
     image: redis:alpine3.12
     container_name: rtb_redis
     restart: unless-stopped
     expose:
       - "6379"
-  
+
   nginx:
-    image: library/nginx:1.16.1-alpine
+    image: library/nginx:1.21-alpine
     container_name: rtb_nginx
     restart: unless-stopped
     hostname: nginx

runtime.txt

@@ -1 +1 @@
-python-3.8.7
+python-3.9.6

src/FlaskRTBCTF/config.py

@@ -6,7 +6,10 @@
 class Config:
     DEBUG = False  # Turn DEBUG OFF before deployment
     SECRET_KEY = os.environ.get("SECRET_KEY", "you-will-never-guess")
-    SQLALCHEMY_DATABASE_URI = os.environ.get("DATABASE_URL") or "sqlite:///site.db"
+    _uri = os.environ.get("DATABASE_URL") or "sqlite:///site.db"
+    if _uri.startswith("postgres://"):
+        _uri = _uri.replace("postgres://", "postgresql://", 1)
+    SQLALCHEMY_DATABASE_URI = _uri
     # For local use, one can simply use SQLlite with: 'sqlite:///site.db'
     # For deployment on Heroku use: `os.environ.get('DATABASE_URL')`
     # in all other cases: `os.environ.get('SQLALCHEMY_DATABASE_URI')`