Update docker files (#598)

* Add redis to docker-compose, bump worker count to 4
* Add workers & missing SECRET_KEY error
* Remove uwsgi specific files
* Parse database host in `docker-entrypoint.sh`. Closes #587

ctfd.ini

@@ -1,46 +0,0 @@
-# UWSGI Configuration File
-# Install uwsgi (sudo apt-get install uwsgi), copy this file to
-# /etc/uwsgi/apps-available and then link it in /etc/uwsgi/apps-enabled
-# Only two lines below (commented) need to be changed for your config.
-# Then, you can use something like the following in your nginx config:
-#
-#        # SERVER_ROOT is not / (e.g. /ctf)
-#        location = /ctf { rewrite ^ /ctf/; }
-#        location /ctf {
-#            include uwsgi_params;
-#            uwsgi_pass unix:/run/uwsgi/app/ctfd/socket;
-#        }
-#
-#        # SERVER_ROOT is /
-#        location / {
-#            include uwsgi_params;
-#            wsgi_pass unix:/run/uwsgi/app/ctfd/socket;
-#        }
-[uwsgi]
-# Where you've put CTFD
-chdir = /var/www/ctfd/
-# If SCRIPT_ROOT is not /
-#mount = /ctf=wsgi.py
-# SCRIPT_ROOT is /
-mount = /=wsgi.py
-
-# You shouldn't need to change anything past here
-plugin = python
-module = wsgi
-
-master = true
-processes = 1
-threads = 1
-
-vacuum = true
-
-manage-script-name = true
-wsgi-file = wsgi.py
-callable = app
-
-die-on-term = true
-
-# If you're not on debian/ubuntu, replace with uid/gid of web user
-uid = www-data
-gid = www-data
-

docker-compose.yml

@@ -10,6 +10,8 @@ services:
       - UPLOAD_FOLDER=/var/uploads
       - LOG_FOLDER=/var/log/CTFd
       - DATABASE_URL=mysql+pymysql://root:ctfd@db/ctfd
+      - REDIS_URL=redis://cache:6379
+      - WORKERS=4
     volumes:
       - .data/CTFd/logs:/var/log/CTFd
       - .data/CTFd/uploads:/var/uploads
@@ -32,7 +34,15 @@ services:
     networks:
         internal:
     # This command is required to set important mariadb defaults
-    command: [mysqld, --character-set-server=utf8mb4, --collation-server=utf8mb4_unicode_ci, --wait_timeout=28800]
+    command: [mysqld, --character-set-server=utf8mb4, --collation-server=utf8mb4_unicode_ci, --wait_timeout=28800, --log-warnings=0]
+
+  cache:
+    image: redis:4
+    restart: always
+    volumes:
+    - .data/redis:/data
+    networks:
+        internal:
 
 networks:
     default:

docker-entrypoint.sh

@@ -1,23 +1,35 @@
 #!/bin/sh
 
+# Check that a .ctfd_secret_key file or SECRET_KEY envvar is set
+if [ ! -f .ctfd_secret_key ] && [ -z "$SECRET_KEY" ]; then
+    if [ $WORKERS -gt 1 ]; then
+        echo "[ ERROR ] You are configured to use more than 1 worker."
+        echo "[ ERROR ] To do this, you must define the SECRET_KEY environment variable or create a .ctfd_secret_key file."
+        echo "[ ERROR ] Exiting..."
+        exit 1
+    fi
+fi
+
+# Check that the database is available
 if [ -n "$DATABASE_URL" ]
     then
-    # https://stackoverflow.com/a/29793382
+    database=`echo $DATABASE_URL | awk -F[@//] '{print $4}'`
-    echo "Waiting on MySQL"
+    echo "Waiting for $database to be ready"
-    while ! mysqladmin ping -h db --silent; do
+    while ! mysqladmin ping -h $database --silent; do
         # Show some progress
         echo -n '.';
         sleep 1;
     done
-    echo "Ready"
+    echo "$database is ready"
     # Give it another second.
     sleep 1;
 fi
 
+# Start CTFd
 echo "Starting CTFd"
 gunicorn 'CTFd:create_app()' \
     --bind '0.0.0.0:8000' \
-    --workers 1 \
+    --workers $WORKERS \
     --worker-class 'gevent' \
     --access-logfile "${LOG_FOLDER:-/opt/CTFd/CTFd/logs}/access.log" \
     --error-logfile "${LOG_FOLDER:-/opt/CTFd/CTFd/logs}/error.log"

wsgi.py

@@ -1,3 +0,0 @@
-from CTFd import create_app
-
-app = create_app()