Create How to host on Azure app service.md

Signed-off-by: falkoro <39274208+falkoro@users.noreply.github.com>

detailed_guides/How to host on Azure app service.md

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+You can choose to host the docker contained on app service so you have less maintenance, and it is also cheaper than a VM. 
+As a student, you can get free Azure credits and you can get free Azure credits with you MSDN license if you work at a Microsoft partner.
+The steps are also fairly straightforward.
+
+To make it work on Azure App service follow the following steps: 
+
+Creating the container: 
+
+1. Sign into Azure via portal.azure.com
+2. Search "app services" and click on it
+3. choose resource group, webapp name.
+4. At "publish" choose: "docker container"
+5. OS: linux
+6. Region: whichever is closer to you
+7. choose Basic B1 as app service plan. this will cost you around 10 dollar in credits
+8. At the "docker tab "change image source" to "dockerhub"
+9. At image, use the following: kaveenk/gpt3discord:latest_release
+10. Go to "review and create" and create the container! 
+11. Wait a minute until it gets provisioned. 
+
+Configurating the container:
+
+App services makes it easy for you to add ENV files without using the CLI. We do this first
+
+1. go to "configuration" under "settings"
+Enter the following env files as defined in the readme.md file in this repository: 
+
+The most important application settings are:
+ADMIN_ROLES
+ALLOWED_GUILDS (your discord server token! not to be confused with a channel token or bot token)
+DALLE_ROLES
+DEBUG_CHANNEL
+DEBUG_GUILD
+DISCORD_TOKEN
+GPT_ROLES
+OPENAI_TOKEN
+HEALTH_SERVICE_ENABLED
+
+ 2. It's important to also add WEBSITES_PORT to the application settings, since we are using the port for the health check of the container. 
+ 3. Go to "Health check" under monitoring and enter the following value: /healthz
+ 4. Of course, set health check to: "on"
+ 5. Press save.
+
+Last step: go to "deployment center" and turn off "continious deployment". 
+This will make sure we get the latest build from docker hub when we restart the container. 
+
+It's as easy as this. Of course, make sure to follow the other steps settings up the discord bot in the readme.md.
+
+Hope this helps!