docs(installation): add documentation for Prowler App installation (#5883)

docs/index.md

@@ -1,6 +1,14 @@
 **Prowler** is an Open Source security tool to perform AWS, Azure, Google Cloud and Kubernetes security best practices assessments, audits, incident response, continuous monitoring, hardening and forensics readiness, and also remediations! We have Prowler CLI (Command Line Interface) that we call Prowler Open Source and a service on top of it that we call <a href="https://prowler.com">Prowler SaaS</a>.
 
-## Prowler CLI
+## Prowler App
+
+![Prowler App](img/compliance-app.png)
+
+Prowler App is a web application that allows you to run Prowler in a simple way. It provides a user-friendly interface to configure and run scans, view results, and manage your security findings.
+
+See how to install the Prowler App in the [Quick Start](#prowler-app-installation) section.
+
+## Prowler CLI
 
 ```console
 prowler <provider>
@@ -17,7 +25,95 @@ prowler dashboard
 It contains hundreds of controls covering CIS, NIST 800, NIST CSF, CISA, RBI, FedRAMP, PCI-DSS, GDPR, HIPAA, FFIEC, SOC2, GXP, AWS Well-Architected Framework Security Pillar, AWS Foundational Technical Review (FTR), ENS (Spanish National Security Scheme) and your custom security frameworks.
 
 ## Quick Start
-### Installation
+### Prowler App Installation
+
+Prowler App can be installed in different ways, depending on your environment:
+
+> See how to use Prowler App in the [Prowler App](tutorials/prowler-app.md) section.
+
+=== "Docker"
+
+    _Requirements_:
+
+    * `Docker Compose` installed: https://docs.docker.com/compose/install/.
+
+    _Commands_:
+
+    ``` bash
+    curl -Lo https://github.com/prowler-cloud/prowler/blob/master/docker-compose.yml \
+    curl -Lo https://github.com/prowler-cloud/prowler/blob/master/.env \
+    docker compose up -d
+    ```
+
+    > Enjoy Prowler App at http://localhost:3000 by signing up with your email and password.
+
+    ???+ note
+        You can change the environment variables in the `.env` file. Note that it is not recommended to use the default values in production environments.
+
+    ???+ note
+        There is a development mode available, you can use the file https://github.com/prowler-cloud/prowler/blob/master/docker-compose.dev.yml to run the app in development mode.
+
+    ???+ warning
+        Google and GitHub authentication is only available in [Prowler Cloud](https://prowler.com).
+
+=== "GitHub"
+
+    _Requirements_:
+
+    * `git` installed.
+    * `poetry` installed: [poetry installation](https://python-poetry.org/docs/#installation).
+    * `npm` installed: [npm installation](https://docs.npmjs.com/downloading-and-installing-node-js-and-npm).
+    * `Docker Compose` installed: https://docs.docker.com/compose/install/.
+
+    _Commands to run the API_:
+
+    ``` bash
+    git clone https://github.com/prowler-cloud/prowler \
+    cd prowler/api \
+    poetry install \
+    poetry shell \
+    set -a \
+    source .env \
+    docker compose up postgres valkey -d \
+    cd src/backend \
+    python manage.py migrate --database admin \
+    gunicorn -c config/guniconf.py config.wsgi:application
+    ```
+
+    > Now, you can access the API documentation at http://localhost:8080/api/v1/docs.
+
+    _Commands to run the API Worker_:
+
+    ``` bash
+    git clone https://github.com/prowler-cloud/prowler \
+    cd prowler/api \
+    poetry install \
+    poetry shell \
+    set -a \
+    source .env \
+    cd src/backend \
+    python -m celery -A config.celery worker -l info -E
+    ```
+
+    _Commands to run the UI_:
+
+    ``` bash
+    git clone https://github.com/prowler-cloud/prowler \
+    cd prowler/ui \
+    npm install \
+    npm run build \
+    npm start
+    ```
+
+    > Enjoy Prowler App at http://localhost:3000 by signing up with your email and password.
+
+    ???+ warning
+        Make sure to have `api/.env` and `ui/.env.local` files with the required environment variables. You can find the required environment variables in the [`api/.env.template`](https://github.com/prowler-cloud/prowler/blob/master/api/.env.example) and [`ui/.env.template`](https://github.com/prowler-cloud/prowler/blob/master/ui/.env.template) files.
+
+    ???+ warning
+        Google and GitHub authentication is only available in [Prowler Cloud](https://prowler.com).
+
+### Prowler CLI Installation
 
 Prowler is available as a project in [PyPI](https://pypi.org/project/prowler/), thus can be installed as Python package with `Python >= 3.9`:
 
@@ -195,18 +291,23 @@ Prowler is available as a project in [PyPI](https://pypi.org/project/prowler/),
 
 ## Prowler container versions
 
-The available versions of Prowler are the following:
+The available versions of Prowler CLI are the following:
 
 - `latest`: in sync with `master` branch (bear in mind that it is not a stable version)
+- `v4-latest`: in sync with `v4` branch (bear in mind that it is not a stable version)
 - `v3-latest`: in sync with `v3` branch (bear in mind that it is not a stable version)
 - `<x.y.z>` (release): you can find the releases [here](https://github.com/prowler-cloud/prowler/releases), those are stable releases.
 - `stable`: this tag always point to the latest release.
+- `v4-stable`: this tag always point to the latest release for v4.
 - `v3-stable`: this tag always point to the latest release for v3.
 
 The container images are available here:
-
-- [DockerHub](https://hub.docker.com/r/toniblyx/prowler/tags)
-- [AWS Public ECR](https://gallery.ecr.aws/prowler-cloud/prowler)
+- Prowler CLI:
+    - [DockerHub](https://hub.docker.com/r/toniblyx/prowler/tags)
+    - [AWS Public ECR](https://gallery.ecr.aws/prowler-cloud/prowler)
+- Prowler App:
+    - [DockerHub - Prowler UI](https://hub.docker.com/r/prowlercloud/prowler-ui/tags)
+    - [DockerHub - Prowler API](https://hub.docker.com/r/prowlercloud/prowler-api/tags)
 
 ## High level architecture
 

mkdocs.yml

@@ -11,6 +11,7 @@ theme:
   name: material
   favicon: favicon.ico
   features:
+    - content.code.copy
     - navigation.tabs
     - navigation.tabs.sticky
     - navigation.sections