fix(core): remove unnecessary line continuation in bundle config command

Author: hgw77

docker/Dockerfile.dev

@@ -69,7 +69,7 @@ ENV PGDATA="/app/tmp/postgresql/data"
 
 RUN echo -e '#!/bin/bash\n\n\
   set -e \n\
-  bundle config set --local path 'vendor/bundle' && \n\
+  bundle config set --local path 'vendor/bundle' \n\
   bundle install \n\
   pnpm i \n\
   mkdir -p "$PGDATA" && chown -R postgres:postgres "$PGDATA"\n\