feat: add docs for setting ENCRYPTION_KEY in .env in contributing guide (#1088)

Co-authored-by: Matthias Nannt <mail@matthiasnannt.com>

.env.example

@@ -15,6 +15,15 @@ SURVEY_BASE_URL=http://localhost:3000/i
 # Set this if you want to have a shorter link for surveys
 SHORT_SURVEY_BASE_URL=
 
+# Encryption keys
+# Please set both for now, we will change this in the future
+
+# You can use: `openssl rand -base64 16` to generate one
+FORMBRICKS_ENCRYPTION_KEY=
+
+# You can use: `openssl rand -base64 24` to generate one
+ENCRYPTION_KEY=
+
 ##############
 #  DATABASE  #
 ##############
@@ -93,12 +102,6 @@ GOOGLE_CLIENT_SECRET=
 # Cron Secret
 CRON_SECRET=
 
-# Encryption key
-# You can use: `openssl rand -base64 16` to generate one
-FORMBRICKS_ENCRYPTION_KEY=
-# You can use: `openssl rand -base64 24` to generate one
-ENCRYPTION_KEY=
-
 # Configure this when you want to ship JS & CSS files from a complete URL instead of the current domain
 # ASSET_PREFIX_URL=
 

apps/formbricks-com/app/docs/contributing/setup/page.mdx

@@ -53,6 +53,17 @@ To get the project running locally on your machine you need to have the followin
 
    </CodeGroup>
 
+1. Generate a secret value mandatory to be set for the key ENCRYPTION_KEY in the .env file. You can use the following command to generate the random string of required length:
+
+   <CodeGroup title="Set value of ENCRYPTION_KEY">
+
+   ```bash
+   openssl rand -base64 24
+   ```
+
+   </CodeGroup>
+
+
 1. Make sure you have [`Docker`](https://docs.docker.com/compose/) & [`docker-compose`](https://docs.docker.com/compose/) installed and running on your machine. Then run the following command to start the formbricks dev setup:
 
    <CodeGroup title="Start Formbricks Dev Setup">