DRU

Run any Ruby or Rails command without need to install them locally.

This utility is under active development. Some commands and options may change in a time.

Installation

$ curl -s https://raw.githubusercontent.com/zinovyev/dru/master/dru | sudo sh -c 'cat > /usr/bin/dru && chmod +x /usr/bin/dru'

Update

$ dru update

Examples

Run a docker container with the latest alpine ruby image

$ dru shell
/usr/src # ruby -v
ruby 2.6.3p62 (2019-04-16 revision 67580) [x86_64-linux-musl]

Run the irb shell

$ dru irb -t '2.7-rc-slim'
irb(main):003:0> RUBY_VERSION
=> "2.7.0"

Create a new 6.0.0.rc1 Rails project in the current directory...

$ dru rails -r '6.0.0.rc1' -e 'new . --database=postgresql'
$ ls
app  bin  config  config.ru  db  Gemfile  Gemfile.lock  lib  log  package.json  public  Rakefile  README.md  storage  \
test  tmp  vendor

...and then initialize a docker-compose project for a local development

$ dru project
$ ls
app  bin  config  config.ru  db  docker-compose.yml  Dockerfile  Gemfile  Gemfile.lock  lib  log  package.json  \
public  Rakefile  README.md  storage  test  tmp  vendor

Commands

dru shell     Runs sh in ruby conainer
dru irb       Runs irb in ruby conainer
dru rails     Runs rails command in the container
dru project   Generate Dockerfile and docker-compose.yml files
dru update    Updates dru to the latest stable release
dru uninstall Removes dru from your machine

Options

-d or --dir   Mount directory (default: current directory)
-t or --tag   Tag of ruby image (default: alpine)
-e or --exec  Execute a custom command in the container