Fix the docker build

[QuintenQVD0]

Changes

• Implement a multi-stage build: first, use Composer to handle dependencies, then build assets with Yarn and Vite, followed by creating the final container.
• The sequence is critical since Vite requires Composer dependencies to function correctly.
• Specify the platform explicitly where necessary for better compatibility.
• Streamline file transfers between stages, ensuring only a single COPY . . is required.

[alexevladgabriel]

LGTM