Merge pull request #1909 from LiskHQ/1907-update-service-source-guide…

…-with-pre-requisite-note

Update service source guide with pre-requisite note in Lisk Service v0.7.0

docs/antora/modules/ROOT/pages/setup/docker.adoc

@@ -42,11 +42,6 @@ It is recommended to set up a blockchain node first, before setting up Lisk Serv
 
 == Setting up Lisk Service
 
-[IMPORTANT]
-====
-It is strongly recommended to synchronize your blockchain node with the network **before** starting the Lisk Service.
-====
-
 === Prerequisites
 
 ==== Requirements

docs/antora/modules/ROOT/pages/setup/source.adoc

@@ -27,13 +27,26 @@ Mona Bärenfänger <[email protected]>
 :url_config: configuration/source.adoc
 :url_management_pm2: management/source.adoc
 :url_references_config: configuration/index.adoc
-
-TIP: Install from source code if you want to customize the codebase of Lisk Service, e.g. if you want to adjust the API to be fully compatible with your blockchain application.
+:url_core_setup_npm: v4@lisk-core::setup/npm.adoc
 
 As an alternative to the Docker image setup, it is also possible to install Lisk Service from source code.
 
+TIP: Install from source code if you want to customize the codebase of Lisk Service, e.g. if you want to adjust the API to be fully compatible with your blockchain application.
+
 This setup requires more steps than the Docker image installation, however this provides the developer with the possibility to customize the Lisk Service codebase.
 
+[NOTE]
+====
+*Pre-requisite*
+
+Lisk Service is a web application middleware that allows interaction with various blockchain networks based on the Lisk protocol.
+It is recommended to set up a blockchain node first, before setting up Lisk Service.
+
+* To set up a Lisk-Core node, see any of our setup guides, such as xref:{url_core_setup_npm}[].
+* Alternatively, you can set up a sidechain node to connect to Lisk Service.
+* Please make sure to set `system.keepEventsForHeights: -1` in the node config before synchronizing the node with the network.
+====
+
 == Prerequisites
 
 The following dependencies are required to install and run Lisk Service from Source.
@@ -320,11 +333,6 @@ npm install -g pm2
 
 == Installation
 
-[IMPORTANT]
-====
-It is strongly recommended that you synchronize your Lisk Core node with the network **before** starting the Lisk Service.
-====
-
 If you have not already done so, clone the {url_github_service}[lisk-service^] GitHub repository and then navigate into the project folder and check out the latest release.
 
 .Clone Lisk Service repository