Add a RabbitMQ egg (#1276)

* Add the RabbitMQ egg

README.md

@@ -1,4 +1,4 @@
-# Parkers Pterodactyl eggs repo
+# Parkers Pterodactyl eggs repo
 
 I am working on adding a large collection of public eggs for the Pterodactyl community.
 
@@ -246,3 +246,5 @@ If you are reading this it looks like you are looking to add an egg to your serv
 * [Grafana](/software/grafana)
 ### haste-server
 * [haste-server](/software/haste-server)
+### RabbitMQ
+* [rabbitmq](/software/rabbitmq)

software/rabbitmq/README.md

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+# RabbitMQ
+
+### From the [RabbitMQ](https://www.rabbitmq.com/) website
+RabbitMQ is the most widely deployed open source message broker.
+
+### Installation
+Follow the common egg installation guide to install the egg on your Pterodactyl instance.
+When setting up a server, the latest RabbitMQ version will be used by default.
+
+With pretty new and old versions of RabbitMQ, you might have to adjust the used Erlang version.
+This can be archived by adjusting the version number of the used image (e. g. `ghcr.io/pterodactyl/yolks:erlang_22` instead of `ghcr.io/parkervcp/yolks:erlang_24`).
+
+### Configuration
+Configuring RabbitMQ in Pterodactyl is only possible using the config files.
+This means:
+ - Configure the server itself as normal using `/home/container/etc/rabbitmq/rabbitmq.conf`
+ - Enable plugins using the plugin file located at `/home/container/etc/rabbitmq/enabled_plugins`
+ - Configure users and vhosts through a [definitions.json](https://www.rabbitmq.com/definitions.html)
+
+You can set the path to the used `definitions.json` using the `load_definitions` option in your config.
+Note that RabbitMQ versions prior to 3.8.6 will require a properly configured management plugin to do so!
+The easiest way to get a working `definitions.json` is to setup a local instance with the 
+management plugin. You can configure your instance there and load the definitions as stated by uploading them.
+
+By default, only `listeners.tcp.default` is configured to match your primary allocation. 
+If you want to expose some other port (e. g. the web management interface) you have to manually configure the
+port in your `rabbitmq.conf`.
+
+### Update support
+The egg _should_ keep the `etc` folder when reinstalling, to prevent destroying the configuration by accident. Therefore a reinstallation with "latest" as the selected version can be used to update RabbitMQ.
+
+If you want to reset the server completly, remove the `etc` directory manually before reinstalling.
+
+### Server Ports
+
+Ports required to run the server in a table format.
+
+| Port            | default |
+| --------------- | ------- |
+| RabbitMQ Broker | 5672    |

software/rabbitmq/egg-rabbit-m-q.json

@@ -0,0 +1,43 @@
+{
+    "_comment": "DO NOT EDIT: FILE GENERATED AUTOMATICALLY BY PTERODACTYL PANEL - PTERODACTYL.IO",
+    "meta": {
+        "version": "PTDL_v1",
+        "update_url": null
+    },
+    "exported_at": "2021-08-02T15:24:45+02:00",
+    "name": "RabbitMQ",
+    "author": "p.zarrad@outlook.de",
+    "description": "RabbitMQ is a feature rich, multi-protocol messaging broker.",
+    "features": null,
+    "images": [
+        "ghcr.io\/parkervcp\/yolks:erlang_24",
+        "ghcr.io\/parkervcp\/yolks:erlang_23",
+        "ghcr.io\/parkervcp\/yolks:erlang_22"
+    ],
+    "file_denylist": [],
+    "startup": ".\/sbin\/rabbitmq-server",
+    "config": {
+        "files": "{\r\n    \"etc\/rabbitmq\/rabbitmq.conf\": {\r\n        \"parser\": \"file\",\r\n        \"find\": {\r\n            \"listeners.tcp.default\": \"listeners.tcp.default    = 0.0.0.0:{{server.build.default.port}}\"\r\n        }\r\n    }\r\n}",
+        "startup": "{\r\n    \"done\": \" completed with\"\r\n}",
+        "logs": "{}",
+        "stop": "^C"
+    },
+    "scripts": {
+        "installation": {
+            "script": "#!\/bin\/sh\r\n# Switch to mounted directory\r\ncd \/mnt\/server\r\n# Update and install xz\r\napk update\r\napk add xz\r\n# Cleanup previous install if available but leave etc untouched\r\nfind . -maxdepth 1 ! -name \"etc\" ! -name . -exec rm -rf {} \\;\r\n# Download and extract RabbitMQ\r\nversion=${RABBITMQ_VERSION}\r\nif [ \"$version\" = \"latest\" ]; then version=$(curl --silent \"https:\/\/api.github.com\/repos\/rabbitmq\/rabbitmq-server\/releases\/latest\" | grep '\"tag_name\":' | sed -E 's\/.*\"([^\"]+)\".*\/\\1\/' | cut -c2-); fi\r\ncurl -L https:\/\/github.com\/rabbitmq\/rabbitmq-server\/releases\/download\/v${version}\/rabbitmq-server-generic-unix-${version}.tar.xz --output rabbitmq.tar.xz\r\nxz -v -d rabbitmq.tar.xz && tar -xvf rabbitmq.tar\r\nmv -n rabbitmq_server-*\/* .\/\r\nrm -rf rabbitmq.tar rabbitmq_server-*\/\r\n# If there is no config, download default one\r\nif [ ! -f \"etc\/rabbitmq\/rabbitmq.conf\" ]; then mkdir -p etc\/rabbitmq\/ && curl -L https:\/\/raw.githubusercontent.com\/parkervcp\/eggs\/master\/software\/rabbitmq\/rabbitmq.conf --output etc\/rabbitmq\/rabbitmq.conf; fi",
+            "container": "ghcr.io\/pterodactyl\/installers:alpine",
+            "entrypoint": "ash"
+        }
+    },
+    "variables": [
+        {
+            "name": "RabbitMQ Version",
+            "description": "The version of RabbitMQ to install. By default the latest version is being installed.",
+            "env_variable": "RABBITMQ_VERSION",
+            "default_value": "latest",
+            "user_viewable": true,
+            "user_editable": true,
+            "rules": "required|string|max:20"
+        }
+    ]
+}