feat: add instruction for railway.app

Author: lakhansamani

README.md

@@ -66,6 +66,7 @@ This guide helps you practice using Authorizer to evaluate it before you use it
 - [Install using source code](#install-using-source-code)
 - [Install using binaries](#install-using-binaries)
 - [Install instance on heroku](#install-instance-on-Heroku)
+- [Install instance on railway.app](#install-instance-on-railway)
 
 ## Install using source code
 
@@ -134,12 +135,19 @@ Deploy Authorizer using [heroku](https://github.com/authorizerdev/authorizer-her
 <br/><br/>
 [![Deploy to Heroku](https://www.herokucdn.com/deploy/button.svg)](https://heroku.com/deploy?template=https://github.com/authorizerdev/authorizer-heroku)
 
+# Install instance on railway
+
+Deploy production ready Authorizer instance using [railway.app](https://github.com/authorizerdev/authorizer-railway) with postgres and redis for free and build with it in 30seconds
+<br/>
+
+[![Deploy on Railway](https://railway.app/button.svg)](https://railway.app/new/template?template=https%3A%2F%2Fgithub.com%2Fauthorizerdev%2Fauthorizer-railway&plugins=postgresql%2Credis&envs=ENV%2CDATABASE_TYPE%2CADMIN_SECRET%2CCOOKIE_NAME%2CJWT_ROLE_CLAIM%2CJWT_TYPE%2CJWT_SECRET%2CFACEBOOK_CLIENT_ID%2CFACEBOOK_CLIENT_SECRET%2CGOOGLE_CLIENT_ID%2CGOOGLE_CLIENT_SECRET%2CGITHUB_CLIENT_ID%2CGITHUB_CLIENT_SECRET%2CALLOWED_ORIGINS%2CROLES%2CPROTECTED_ROLES%2CDEFAULT_ROLES&optionalEnvs=FACEBOOK_CLIENT_ID%2CFACEBOOK_CLIENT_SECRET%2CGOOGLE_CLIENT_ID%2CGOOGLE_CLIENT_SECRET%2CGITHUB_CLIENT_ID%2CGITHUB_CLIENT_SECRET%2CALLOWED_ORIGINS%2CROLES%2CPROTECTED_ROLES%2CDEFAULT_ROLES&ENVDesc=Deployment+environment&DATABASE_TYPEDesc=With+railway+we+are+deploying+postgres+db&ADMIN_SECRETDesc=Secret+to+access+the+admin+apis&COOKIE_NAMEDesc=Name+of+http+only+cookie+that+will+be+used+as+session&FACEBOOK_CLIENT_IDDesc=Facebook+client+ID+for+facebook+login&FACEBOOK_CLIENT_SECRETDesc=Facebook+client+secret+for+facebook+login&GOOGLE_CLIENT_IDDesc=Google+client+ID+for+google+login&GOOGLE_CLIENT_SECRETDesc=Google+client+secret+for+google+login&GITHUB_CLIENT_IDDesc=Github+client+ID+for+github+login&GITHUB_CLIENT_SECRETDesc=Github+client+secret+for+github+login&ALLOWED_ORIGINSDesc=Whitelist+the+URL+for+which+this+instance+of+authorizer+is+allowed&ROLESDesc=Comma+separated+list+of+roles+that+platform+supports.+Default+role+is+user&PROTECTED_ROLESDesc=Comma+separated+list+of+protected+roles+for+which+sign-up+is+disabled&DEFAULT_ROLESDesc=Default+role+that+should+be+assigned+to+user.+It+should+be+one+from+the+list+of+%60ROLES%60+env.+Default+role+is+user&JWT_ROLE_CLAIMDesc=JWT+key+to+be+used+to+validate+the+role+field.&JWT_TYPEDesc=JWT+encryption+type&JWT_SECRETDesc=Random+string+that+will+be+used+for+encrypting+the+JWT+token&ENVDefault=PRODUCTION&DATABASE_TYPEDefault=postgres&COOKIE_NAMEDefault=authorizer&JWT_TYPEDefault=HS256&JWT_ROLE_CLAIMDefault=role)
+
 ### Things to consider
 
 - For social logins, you will need respective social platform key and secret
 - For having verified users, you will need an SMTP server with an email address and password using which system can send emails. The system will send a verification link to an email address. Once an email is verified then, only able to access it.
   > Note: One can always disable the email verification to allow open sign up, which is not recommended for production as anyone can use anyone's email address 😅
-- For persisting user sessions, you will need Redis URL. If you do not configure a Redis server, sessions will be persisted until the instance is up or not restarted. For better response time on authorization requests/middleware, we recommend deploying Redis on the same infra/network as your authorizer server.
+- For persisting user sessions, you will need Redis URL (not in case of railway.app). If you do not configure a Redis server, sessions will be persisted until the instance is up or not restarted. For better response time on authorization requests/middleware, we recommend deploying Redis on the same infra/network as your authorizer server.
 
 ## Integrating into your website