Fix graceful shutdown of local dev containers and use watchfiles for beat + flower (#3925)

Co-authored-by: Bruno Alla <alla.brunoo@gmail.com>
Co-authored-by: Bruno Alla <browniebroke@users.noreply.github.com>

{{cookiecutter.project_slug}}/compose/local/django/celery/beat/start

@@ -5,4 +5,4 @@ set -o nounset
 
 
 rm -f './celerybeat.pid'
-celery -A config.celery_app beat -l INFO
+exec watchfiles celery.__main__.main --args '-A config.celery_app beat -l INFO'

{{cookiecutter.project_slug}}/compose/local/django/celery/flower/start

@@ -3,9 +3,6 @@
 set -o errexit
 set -o nounset
 
-
+exec watchfiles celery.__.main__.main \
-celery \
+    --args \
-    -A config.celery_app \
+    "-A config.celery_app -b \"${CELERY_BROKER_URL}\" flower --basic_auth=\"${CELERY_FLOWER_USER}:${CELERY_FLOWER_PASSWORD}\""
-    -b "${CELERY_BROKER_URL}" \
-    flower \
-    --basic_auth="${CELERY_FLOWER_USER}:${CELERY_FLOWER_PASSWORD}"

{{cookiecutter.project_slug}}/compose/local/django/celery/worker/start

@@ -4,4 +4,4 @@ set -o errexit
 set -o nounset
 
 
-watchfiles celery.__main__.main --args '-A config.celery_app worker -l INFO'
+exec watchfiles celery.__main__.main --args '-A config.celery_app worker -l INFO'

{{cookiecutter.project_slug}}/compose/local/django/start

@@ -7,7 +7,7 @@ set -o nounset
 
 python manage.py migrate
 {%- if cookiecutter.use_async == 'y' %}
-uvicorn config.asgi:application --host 0.0.0.0 --reload --reload-include '*.html'
+exec uvicorn config.asgi:application --host 0.0.0.0 --reload --reload-include '*.html'
 {%- else %}
-python manage.py runserver_plus 0.0.0.0:8000
+exec python manage.py runserver_plus 0.0.0.0:8000
 {%- endif %}

{{cookiecutter.project_slug}}/compose/local/docs/start

@@ -4,4 +4,4 @@ set -o errexit
 set -o pipefail
 set -o nounset
 
-make livehtml
+exec make livehtml

{{cookiecutter.project_slug}}/compose/production/django/start

@@ -28,7 +28,7 @@ if compress_enabled; then
 fi
 {%- endif %}
 {%- if cookiecutter.use_async == 'y' %}
-/usr/local/bin/gunicorn config.asgi --bind 0.0.0.0:5000 --chdir=/app -k uvicorn.workers.UvicornWorker
+exec /usr/local/bin/gunicorn config.asgi --bind 0.0.0.0:5000 --chdir=/app -k uvicorn.workers.UvicornWorker
 {%- else %}
-/usr/local/bin/gunicorn config.wsgi --bind 0.0.0.0:5000 --chdir=/app
+exec /usr/local/bin/gunicorn config.wsgi --bind 0.0.0.0:5000 --chdir=/app
 {%- endif %}