Avoid trying to re-install dependencies

We only need to dump the autoloader at this stage, so it's unnecessary
to do anything beyond that.

Signed-off-by: Luís Cobucci <[email protected]>

Author: lcobucci

Dockerfile

@@ -30,6 +30,6 @@ RUN COMPOSER_CACHE_DIR=/dev/null composer install --no-dev --no-autoloader
 COPY bin /app/bin/
 COPY src /app/src/
 
-RUN composer install -a --no-dev
+RUN composer dumpautoload -a --no-dev
 
 ENTRYPOINT ["/app/bin/console.php"]