scripts for setup, nginx and service, fixing issue with server shutdown when both are running

script_setup_py_environment.sh

@@ -0,0 +1,25 @@
+#!/bin/bash
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+
+python3 --version
+python3 -m venv "$SCRIPT_DIR/.venv" --copies # This will copy the Python binary so cap_net_bind_service will work
+
+$SCRIPT_DIR/.venv/bin/pip install -r $SCRIPT_DIR/requirements.txt
+
+echo "Need Sudo for allowing local .venv python to bind to port < 1024 (SMTP uses port 25)"
+# Allow binding to port < 1024 (SMTP uses port 25) without use of sudo
+for f in $SCRIPT_DIR/.venv/bin/python*; do if sudo setcap 'cap_net_bind_service=+ep' "$f"; then echo "Set CapNetBindService for $(basename "$f")"; fi; done
+
+
+echo "*******************************************************************"
+echo "To starth the app for testing just run in the virtual environment:"
+echo "python app.py"
+echo "*******************************************************************"
+echo "For testing run SMTP server as:"
+echo "python app.py --smtp-only --debug"
+echo "For testing with web interface run:"
+echo "python app.py --web-only --debug"
+echo "*******************************************************************"
+echo "Gunicorn must run web interface separately, from the SMTP server"
+echo "Production Services will run the app as:"
+echo "python app.py --smtp-only & gunicorn -w 4 -b 0.0.0.0:5000 app:flask_app"