Fix REDIS_URL missing

Fixes #1570.

{{cookiecutter.project_slug}}/.envs/.local/.django

@@ -1,8 +1,7 @@
 # General
 # ------------------------------------------------------------------------------
 USE_DOCKER=yes
-{% if cookiecutter.use_celery == "y" %}
-# Celery
+
+# Redis
 # ------------------------------------------------------------------------------
-CELERY_BROKER_URL=redis://redis:6379/0
-{% endif %}
+REDIS_URL=redis://redis:6379/0

{{cookiecutter.project_slug}}/.envs/.production/.django

@@ -16,11 +16,7 @@ DJANGO_SECURE_SSL_REDIRECT=False
 MAILGUN_API_KEY=
 DJANGO_SERVER_EMAIL=
 MAILGUN_DOMAIN=
-{% if cookiecutter.use_celery == "y" %}
-# Celery
-# ------------------------------------------------------------------------------
-CELERY_BROKER_URL=redis://redis:6379/0
-{% endif %}
+
 # AWS
 # ------------------------------------------------------------------------------
 DJANGO_AWS_ACCESS_KEY_ID=
@@ -43,3 +39,7 @@ WEB_CONCURRENCY=4
 # ------------------------------------------------------------------------------
 DJANGO_SENTRY_DSN=
 {% endif %}
+
+# Redis
+# ------------------------------------------------------------------------------
+REDIS_URL=redis://redis:6379/0

{{cookiecutter.project_slug}}/compose/production/django/entrypoint.sh

@@ -7,6 +7,9 @@ set -o nounset
 
 cmd="$@"
 
+# N.B. If only .env files supported variable expansion...
+export CELERY_BROKER_URL="${REDIS_URL}"
+
 if [ -z "${POSTGRES_USER}" ]; then
     base_postgres_image_default_user='postgres'
     export POSTGRES_USER="${base_postgres_image_default_user}"

{{cookiecutter.project_slug}}/config/settings/production.py

@@ -21,7 +21,7 @@ DATABASES['default']['CONN_MAX_AGE'] = env.int('CONN_MAX_AGE', default=60)  # no
 CACHES = {
     'default': {
         'BACKEND': 'django_redis.cache.RedisCache',
-        'LOCATION': f'{env("REDIS_URL", default="redis://127.0.0.1:6379")}/{0}',
+        'LOCATION': env('REDIS_URL'),
         'OPTIONS': {
             'CLIENT_CLASS': 'django_redis.client.DefaultClient',
             # Mimicing memcache behavior.