Updated README.md

Author: Tutorialwork

README.md

@@ -5,6 +5,47 @@ about a week.
 
 This program connects to your email account via IMAP and fetches the last 100 emails and then checks if they are from
 Kleinanzeigen.
-It then simply calls the URL in the email to renew the ad and move the email to another folder in your email account.
+It then simply calls the URL in the email to renew the ad and move the email to another folder in your email account
+depending on if they success or not.
 
-**The installation instructions are coming soon**
+## Installation
+
+The easiest way to set up the application is to use Docker and docker-compose.
+Just save the file below as ``docker-compose.yml`` and run ``docker-compose up -d`` to run the application in the
+background.
+It's recommended to run it on a server so that it can periodically check for new mail.
+I can recommend using Portainer to manage your Docker containers, you just need to paste the file below into a stack and
+run it. That's it.
+
+But before you start the application, you need to set up the credentials to access your mail account.
+It's possible to use several mail accounts.
+
+### Gmail
+
+For Gmail, you need to create an application password to use the application if you have two-factor authentication
+enabled.
+Simply visit [this page](https://myaccount.google.com/apppasswords) to create the application password.
+
+The hostname for Gmail is ``imap.gmail.com``
+
+### iCloud
+
+With iCloud, you also need to create an application password [here](https://account.apple.com/account/manage) to sign
+in.
+
+The host name for iCloud is: ``imap.mail.me.com``
+
+```yaml
+services:
+  app:
+    image: ghcr.io/tutorialwork/kleinanzeigen-ads-renewer:1.0.0
+    environment:
+      - IMAP_SERVERS_GMAIL_HOST=imap.gmail.com
+      - IMAP_SERVERS_GMAIL_USERNAME=YOUR_GMAIL_EMAIL
+      - IMAP_SERVERS_GMAIL_PASSWORD=YOUR_GMAIL_APP_PASSWORD
+      - IMAP_SERVERS_ICLOUD_HOST=imap.mail.me.com
+      - IMAP_SERVERS_ICLOUD_USERNAME=YOUR_ICLOUD_EMAIL
+      - IMAP_SERVERS_ICLOUD_PASSWORD=YOUR_ICLOUD_APP_PASSWORD
+      - IMAP_FOLDERS_PROCESSED_FOLDER_NAME=Kleinanzeigen Mails # Optional, name of the folder where the mails get moved after successfully renewing the ad
+      - IMAP_FOLDERS_FAILED_FOLDER_NAME=Kleinanzeigen Failed Mails # Optional, name of the folder where the mails get moved after the renewing failed 3 times
+```