Use Docker Alpine variants

Signed-off-by: Roberto Rosario <roberto.rosario@mayan-edms.com>

docker/docker-compose.yml

@@ -18,8 +18,8 @@ services:
       # Enable to use RabbitMQ
       # MAYAN_CELERY_BROKER_URL: amqp://mayan:mayanrabbitpass@broker:5672/mayan
       # Disable Redis Broker to use RabbitMQ as Broker
-      MAYAN_CELERY_BROKER_URL: redis://redis:6379/1
-      MAYAN_CELERY_RESULT_BACKEND: redis://redis:6379/0
+      MAYAN_CELERY_BROKER_URL: redis://redis:6379/0
+      MAYAN_CELERY_RESULT_BACKEND: redis://redis:6379/1
       MAYAN_DATABASES: "{'default':{'ENGINE':'django.db.backends.postgresql','NAME':'mayan','PASSWORD':'mayandbpass','USER':'mayan','HOST':'postgresql'}}"
     image: mayanedms/mayanedms:3.3
     networks:
@@ -35,7 +35,7 @@ services:
       POSTGRES_DB: mayan
       POSTGRES_PASSWORD: mayandbpass
       POSTGRES_USER: mayan
-    image: postgres:9.6
+    image: postgres:9.6-alpine
     networks:
       - mayan-bridge
     restart: unless-stopped
@@ -51,7 +51,7 @@ services:
       - allkeys-lru
       - --save
       - ""
-    image: redis:5.0
+    image: redis:5.0-alpine
     networks:
       - mayan-bridge
     restart: unless-stopped

docs/chapters/docker.rst

@@ -23,7 +23,7 @@ tag here, remember to do so in the next steps also.::
 
 Then download version 9.6 of the Docker PostgreSQL image::
 
-    docker pull postgres:9.6
+    docker pull postgres:9.6-alpine
 
 Create and run a PostgreSQL container::
 
@@ -35,7 +35,7 @@ Create and run a PostgreSQL container::
     -e POSTGRES_DB=mayan \
     -e POSTGRES_PASSWORD=mayanuserpass \
     -v /docker-volumes/mayan-edms/postgres:/var/lib/postgresql/data \
-    -d postgres:9.6
+    -d postgres:9.6-alpine
 
 The PostgreSQL container will have one database named ``mayan``, with an user
 named ``mayan`` too, with a password of ``mayanuserpass``. The container will
@@ -92,7 +92,7 @@ binding (``-p 5432:5432``)::
     -e POSTGRES_DB=mayan \
     -e POSTGRES_PASSWORD=mayanuserpass \
     -v /docker-volumes/mayan-edms/postgres:/var/lib/postgresql/data \
-    -d postgres:9.6
+    -d postgres:9.6-alpine
 
 Launch the Mayan EDMS container with the network option and change the
 database hostname to the PostgreSQL container name (``mayan-edms-postgres``)