When creating the Dockerfile, we run `npm install`, which creates a
`node_modules` folder inside the working directory.
However, when using docker-compose, we overwrite the contents of that
working directory (/var/www/consul) with the contents of the host
machine's working directory. This means that, unless the `npm install`
command is run on the host machine to create a `node_modules` folder on
the host machine (which would pretty much defeat the point of using
Docker), the container won't have a `node_modules` folder and the
application won't run.
So we're defining a volume in docker-compose.yml to make sure we keep
the container's `node_modules` folder.
It was added in commit 1db5a00ea, probably due to the Capistrano
configuration of the developer who wrote the code. On my machine, docker
compose crashed due to these lines.
We aren't sure why this option was added; only that it was added with
macos and windows developers in mind.
Since we aren't sure about it, we're using the default `consistent`
option instead.
We were getting an error since we started using the postgres 9.6 image:
```
Attaching to app_1, database_1
database_1 | Error: Database is uninitialized and superuser password is not specified.
database_1 | You must specify POSTGRES_PASSWORD to a non-empty value for the
database_1 | superuser. For example, "-e POSTGRES_PASSWORD=password" on "docker run".
database_1 |
database_1 | You may also use "POSTGRES_HOST_AUTH_METHOD=trust" to allow all
database_1 | connections without a password. This is *not* recommended.
database_1 |
database_1 | See PostgreSQL documentation about "trust":
database_1 | https://www.postgresql.org/docs/current/auth-trust.html
```
The following parameters have been added to deploy-secrets.yml:
* **use_rvm**: yes/no
* **ruby_version**: Ruby version for rvm. Defaults to 2.3.2
* **repository**: Git repository. Defaults to the oficial repository
* **branch**: Branch to deploy. Defaults to master
* **rails_env**: Defaults to the stage.
Fixed migrations that required admin rights. Now first check if the postgress extensions are available. If so finish without doing nothin.
Added support for passenger.
The following enhancements have been made to docker/docker-compose
* Fixed bug when building the image.
* docker-compose up starts the server
* Scaffolding inside the container respect the ownership of the files
outside it
* Volumes are tagged as 'delegated' in order to improve performance for
mac/windoze users.
* bundler stores packages in a volume. This whay new packages can be
added without rebuilding the image:
```bash
docker-compose run app bundle install
```
