fix: bad path in dockerfile copy, chore: cleanup

docker/app/entrypoint.sh

@@ -0,0 +1,12 @@
+#!/bin/sh
+
+# Sleep for a second to ensure DB is awake and ready
+SLEEP_TIME=$(shuf -i 2-4 -n 1)
+echo "> Sleeping for ${SLEEP_TIME} seconds to wait for the database"
+sleep $SLEEP_TIME
+
+# Provision database
+php /app/bin/console doctrine:migrations:migrate --no-interaction
+php /app/bin/console db:seed
+
+exec docker-php-entrypoint "$@"