Update install instructions

docs/installing.rst

@@ -1,2 +1,46 @@
 Installing
 ==========
+
+Docker
+------
+
+It is recommended to install Humulus using docker. You can run a container for
+CouchDB and a container for Humulus on the same machine. Docker makes it easy
+to update to the latest version.
+
+The following commands can be ran to setup Humulus in docker:
+
+::
+
+    # Create a network for all of this to run under
+    sudo docker network create humulus
+
+    # Create a CouchDB container with admin user credentials admin/password
+    sudo docker run -d -e COUCHDB_USER=admin -e COUCHDB_PASSWORD=password --network humulus --name couchdb couchdb:latest
+    # Create the databases needed to run in single server mode
+    sudo docker exec -it couchdb /usr/bin/curl -X PUT http://admin:password@127.0.0.1:5984/_users
+    sudo docker exec -it couchdb /usr/bin/curl -X PUT http://admin:password@127.0.0.1:5984/_replicator
+    sudo docker exec -it couchdb /usr/bin/curl -X PUT http://admin:password@127.0.0.1:5984/_global_changes
+
+    # Create a config file for humulus
+    sudo mkdir -p /opt/humulus
+    sudo tee /opt/humulus/settings.py <<EOF
+    SECRET_KEY = "$(uuidgen -r)"
+    COUCH_URL = "http://couchdb:5984"
+    COUCH_USERNAME = "admin"
+    COUCH_PASSWORD = "password"
+    COUCH_DATABASE = "humulus"
+    HUMULUS_PASSWORD = "foobar"
+    EOF
+    # Run a container for humulus
+    sudo docker run -d -e HUMULUS_SETTINGS=/app/settings.py \
+      --mount type=bind,source=/opt/humulus/settings.py,destination=/app/settings.py,ro \
+      -p 8000:8000 --network humulus --name humulus shouptech/humulus:latest
+
+    # Setup the database and import BJCP styles
+    sudo docker exec -it -e HUMULUS_SETTINGS=/app/settings.py -e FLASK_APP=humulus humulus flask build-couch
+    sudo docker exec -it -e HUMULUS_SETTINGS=/app/settings.py -e FLASK_APP=humulus humulus flask import-styles
+
+After doing the above, point your web browser to http://localhost:8000. Login
+with the password configured for ``HUMULUS_PASSWORD``. Now get to work creating
+recipes.