docs: update README.md with installation fixes

Author: Victor LUCE

README.md

@@ -29,26 +29,21 @@ This is the backend of the IroCO2 application. Developed using Java 21 and Sprin
 
 ### Run in development
 
-#### With Docker Compose (recommended)
+1. Create a `infrastructure/src/main/resources/application-local.properties` (ask an IroCO2 referent on how to document it)
 
-1. Start the database and tools:
+2. Start the database and localstack :
+   - With Docker Compose (recommended)
    ```bash
    docker compose -f docker/local.docker-compose.yml up -d
    ```
-2. Run the backend (in another terminal):
-   ```bash
-   mvn spring-boot:run
-   ```
-
-#### Without Docker
-
-- Make sure a PostgreSQL instance is running and accessible (see `docker/local.docker-compose.yml` for env vars).
-- Update the `application.properties` or use environment variables as needed.
-- Run:
-  ```bash
-  mvn spring-boot:run
-  ```
-
+   - Without Docker 
+   
+   Make sure a PostgreSQL and a Localstack instance are accessible (see `docker/local.docker-compose.yml` for env vars).
+
+3. On IntelliJ, create a configuration to launch the app with local profile :
+    - in `infrastructure/src/main/java/MainApp.main`, right-click on the run button associated to`main`function
+    - edit a configuration where you simply add `-Dspring.profiles.active=local` as a CLI argument
+4. Run `MainApp.main` with the configuration you just created
 ---
 
 ## 📦 Project Structure
@@ -68,7 +63,7 @@ This is the backend of the IroCO2 application. Developed using Java 21 and Sprin
   mvn test
   ```
 - Cucumber BDD tests included
-- Testcontainers used for integration tests (PostgreSQL, Localstack)
+- Testcontainers used for integration tests (PostgreSQL, Localstack) so a Docker Daemon is needed
 
 ## 🛡️ Security & Auth
 
@@ -85,6 +80,7 @@ We use [Prettier Java](https://github.com/jhipster/prettier-java) to ensure cons
 
 1. Install Node modules:
    ```bash
+   npm install
    npm ci
    ```
 2. (Recommended) Install the File Watchers plugin in your IDE and configure it as follows:
@@ -102,15 +98,6 @@ We use [Prettier Java](https://github.com/jhipster/prettier-java) to ensure cons
 npx prettier --write "**/*.java"
 ```
 
-### Git LF/CRLF configuration
-By default, Git on Windows may convert line endings (LF → CRLF). Our Prettier config enforces LF. To avoid unwanted conversions, run one of the following:
-
-```bash
-git config --system core.autocrlf false  # per-system
-git config --global core.autocrlf false  # per-user
-git config --local core.autocrlf false   # per-project
-```
-
 ---
 
 ## 🧭 Local SonarQube Usage
@@ -120,7 +107,7 @@ We use SonarQube for static code analysis and code quality.
 ### Start SonarQube locally
 
 ```bash
-docker compose -f docker/local.docker-compose.yml up
+docker compose -f docker/sonar.docker-compose.yml up
 ```
 
 ### Configuration