Error after running docker-compose without adding puma

Question

I forgot to add puma in Gemfile before run docker-compose. after the docker-compose download and build all dependencies. It come up with an error that I bring in the block here.

app_1        | bundler: command not found: puma
app_1        | Install missing gem executables with `bundle install`
ibuy7_db_backup_1 exited with code 0
ibuy7_app_1 exited with code 127

How should I solve this problem. Plz help me

Answer 1

I find a solution. I used this command "docker-compose run app bundle install" to install puma and it seams that it installed but steel I have same error. Attaching to ibuy7_db_1, ibuy7_db_backup_1, ibuy7_app_1, ibuy7_nginx_1 app_1 | bundler: command not found: puma app_1 | Install missing gem executables with bundle install ibuy7_db_backup_1 exited with code 0 db_1 | LOG: database system was shut down at 2017-08-13 07:30:28 UTC db_1 | LOG: MultiXact member wraparound protections are now enabled db_1 | LOG: autovacuum launcher started db_1 | LOG: database system is ready to accept connections db_1 | LOG: received smart shutdown request db_1 | LOG: autovacuum launcher shutting down db_1 | LOG: shutting down db_1 | LOG: database system is shut down db_1 | LOG: database system was shut down at 2017-08-13 07:35:16 UTC db_1 | LOG: MultiXact member wraparound protections are now enabled db_1 | LOG: database system is ready to accept connections db_1 | LOG: autovacuum launcher started db_1 | LOG: received smart shutdown request db_1 | LOG: autovacuum launcher shutting down db_1 | LOG: shutting down db_1 | LOG: database system is shut down db_1 | LOG: database system was shut down at 2017-08-13 07:41:30 UTC db_1 | LOG: MultiXact member wraparound protections are now enabled db_1 | LOG: database system is ready to accept connections db_1 | LOG: autovacuum launcher started ibuy7_app_1 exited with code 127 nginx_1 | 2017/08/13 07:44:27 [emerg] 1#1: host not found in upstream "app:3000" in /etc/nginx/conf.d/default.conf:2 nginx_1 | nginx: [emerg] host not found in upstream "app:3000" in /etc/nginx/conf.d/default.conf:2 ibuy7_nginx_1 exited with code 1

Answer 2

If your Dockerfile doesn't have commands to install bundler and other required files then then the image will not have them when you start the container.

If you run docker-compose run app gem install bundler then the new files are lost when that container stops.

You may want to add 'gem install bundler; bundle install; bundle exec rails s' to your docker-compose.yml CMD