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Update rails.md 

Fix parameter error in compose document.
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Liu Lantao 2019-08-28 22:06:04 +08:00 committed by Liu Lantao
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compose/rails.md
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@ -93,11 +93,12 @@ to link them together and expose the web app's port.
With those files in place, you can now generate the Rails skeleton app With those files in place, you can now generate the Rails skeleton app
using [docker-compose run](reference/run.md): using [docker-compose run](reference/run.md):
docker-compose run web rails new . --force --no-deps --database=postgresql docker-compose run --no-deps web rails new . --force --database=postgresql
First, Compose builds the image for the `web` service using the First, Compose builds the image for the `web` service using the `Dockerfile`.
`Dockerfile`. Then it runs `rails new` inside a new container, using that The `--no-deps` tells compose not to start linked services. Then it runs
image. Once it's done, you should have generated a fresh app. `rails new` inside a new container, using that image. Once it's done, you
should have generated a fresh app.
List the files. List the files.