Improvements for docker / gunicorn (#4031)

* Additional options for gunicorn configuration file (in docker):

Ref: https://pythonspeed.com/articles/gunicorn-in-docker/

* Catch potential error on startup

* Tweak log message for docker

* Wrap news feed update in try block

docker/gunicorn.conf.py

@@ -4,7 +4,17 @@ import logging
 import multiprocessing
 import os
 
+# Logger configuration
 logger = logging.getLogger('inventree')
+accesslog = '-'
+errorlog = '-'
+loglevel = os.environ.get('INVENTREE_LOG_LEVEL', 'warning').lower()
+capture_output = True
+
+# Worker configuration
+worker_class = 'gevent'  # Allow multi-threading support
+worker_tmp_dir = '/dev/shm'  # Write temp file to RAM (faster)
+threads = 4
 
 workers = os.environ.get('INVENTREE_GUNICORN_WORKERS', None)
 

docker/init.sh

@@ -20,7 +20,7 @@ fi
 
 # Check if "config.yaml" has been copied into the correct location
 if test -f "$INVENTREE_CONFIG_FILE"; then
-    echo "$INVENTREE_CONFIG_FILE exists - skipping"
+    echo "Loading config file : $INVENTREE_CONFIG_FILE"
 else
     echo "Copying config file to $INVENTREE_CONFIG_FILE"
     cp $INVENTREE_HOME/InvenTree/config_template.yaml $INVENTREE_CONFIG_FILE

docker/requirements.txt

@@ -14,3 +14,4 @@ mariadb>=1.0.7,<1.1.0
 
 # gunicorn web server
 gunicorn>=20.1.0
+gevent>=22.10.2