v0.4.0

docs/cli/commands.md

@@ -15,7 +15,7 @@
 This is the easiest way to get started with Devstep. By running the command
 from your project's root, Devstep will:
 
-1. Create a Docker container based on `fgrehm/devstep:v0.3.1` with project
+1. Create a Docker container based on `fgrehm/devstep:v0.4.0` with project
    sources bind mounted at `/workspace`.
 2. Detect and install project's dependencies on the new container using the
    available buildpacks.
@@ -44,7 +44,7 @@ devstep hack -p 80:8080 --link postgres:db --link memcached:mc -e DEVSTEP_BUNDLE
 
 By running the command from your project's root, Devstep will:
 
-1. Create a Docker container based on `fgrehm/devstep:v0.3.1` with project
+1. Create a Docker container based on `fgrehm/devstep:v0.4.0` with project
    sources bind mounted at `/workspace`.
 2. Detect and install project's dependencies on the new container using the
    available buildpacks.
@@ -53,7 +53,7 @@ By running the command from your project's root, Devstep will:
 
 The `devstep/<PROJECT>` images act like snapshots of your project dependencies
 and will be used as the source image for subsequent `devstep` commands instead
-of the `fgrehm/devstep:v0.3.1` image.
+of the `fgrehm/devstep:v0.4.0` image.
 
 For example, running a `devstep hack` after building the image will use `devstep/<PROJECT>:latest`
 as the base container for new "hacking sessions" so that you don't have to build
@@ -128,6 +128,7 @@ of choice.
 
 * `info` - Show information about the current environment
 * `run` - Run a one off command against the current base image
+* `exec` - Run a one off command against the last container created for the current project
 * `binstubs` - Generate binstubs for the commands specified on devstep.yml
 * `clean` - Remove previously built images for the current environment
 * `pristine` - Rebuild project image from scratch

docs/cli/configuration.md

@@ -12,7 +12,7 @@ The available options are described below:
 repository: 'repo/name'
 
 # The image used by devstep when building environments from scratch
-# DEFAULT: 'fgrehm/devstep:v0.3.1'
+# DEFAULT: 'fgrehm/devstep:v0.4.0'
 source_image: 'source/image:tag'
 
 # The host cache dir that gets mounted inside the container at `/home/devstep/cache`

docs/getting-started.md

@@ -4,15 +4,15 @@
 Devstep comes in two flavors, you can either use the provided CLI or you can build
 on top of the provided images from `Dockerfile`s.
 
-Regardless of the flavor you choose, it is a good idea to `docker pull fgrehm/devstep:v0.3.1`
+Regardless of the flavor you choose, it is a good idea to `docker pull fgrehm/devstep:v0.4.0`
 before creating your first container / image for a better user experience. Docker
 will download that image as needed when using `Dockerfile`s but the Devstep CLI won't.
 
 ## Sanity check
 ---------------
 
 This project is being developed and tested on an Ubuntu 14.04 host with Docker
-1.4.0+, while it is likely to work on other distros / Docker versions /
+1.7.0, while it is likely to work on other distros / Docker versions /
 [boot2docker](http://boot2docker.io/), I'm not sure how it will behave on the wild.
 
 Please note that the CLI is currently limited to connecting to a local `/var/run/docker.sock`
@@ -38,10 +38,10 @@ line to your `~/devstep.yml` so that the image is used as a source for your proj
 To install the CLI, you can run the one liner below and read on for more:
 
 ```sh
-L=$HOME/bin/devstep && curl -sL https://github.com/fgrehm/devstep-cli/releases/download/v0.3.1/linux_amd64 > $L && chmod +x $L
+L=$HOME/bin/devstep && curl -sL https://github.com/fgrehm/devstep-cli/releases/download/v0.4.0/linux_amd64 > $L && chmod +x $L
 ```
 
-_The snippet above assumes `$HOME/bin` is on your PATH, change `$HOME/bin` to
+_The snippet above assumes `$HOME/bin` is on your `PATH`, change `$HOME/bin` to
 an appropriate path in case your system is not configured like that._
 
 ### Doing a quick hack on a project
@@ -180,7 +180,7 @@ The `fgrehm/devstep` image is the base image used for Devstep environments and
 requires you to manually trigger the build:
 
 ```Dockerfile
-FROM fgrehm/devstep:v0.3.1
+FROM fgrehm/devstep:v0.4.0
 
 # Add project to the image and build it
 ADD . /workspace

docs/introduction.md

@@ -25,28 +25,31 @@ is not an easy task for many people. Yes, there are plenty of platform specific
 images available for download on [Docker Hub](https://hub.docker.com/) but because
 Devstep's base image provides an environment that is [similar to Heroku's](https://github.com/progrium/cedarish),
 it should be capable of building and running a wide range of applications / tools
-/ libraries from a single image.
+/ libraries from a single image without the need to worry about writing `Dockerfile`s.
 
-Devstep is also capable of reducing the disk space and initial configuration times by
-(optionally) caching packages on the host machine using a strategy similar to [vagrant-cachier's cache buckets](http://fgrehm.viewdocs.io/vagrant-cachier/how-does-it-work),
+With Devstep's CLI, we can also reduce the disk space and initial configuration
+times by (optionally) caching packages on the host machine using a strategy similar
+to [vagrant-cachier's cache buckets](http://fgrehm.viewdocs.io/vagrant-cachier/how-does-it-work),
 where project dependencies packages are kept on the host while its contents are
 extracted inside the container.
 
 
 ## Usage
 
 Devstep can be used to build development environments in at least two different
-ways: from the provided Golang CLI or from `Dockerfile`s. To run the images built,
-you can use the provided `devstep hack` command, use other tools (like [docker-compose](http://docs.docker.com/compose/))
+ways: from the provided CLI or from `Dockerfile`s. To run the images built, you
+can use the provided `devstep hack` command, use other tools (like [docker-compose](http://docs.docker.com/compose/))
 or just `docker run` them by hand.
 
 
 ## What's included on the base [Docker image](https://registry.hub.docker.com/u/fgrehm/devstep/)?
 
-That image is based on [`progrium/cedarish:cedar14`](https://github.com/progrium/cedarish),
-so everything that gets installed by it will be available for `fgrehm/devstep` images.
+That image is based on [Heroku's `cedar:14` image](https://registry.hub.docker.com/u/heroku/cedar/)
+which makes up for the [Cedar-14](https://devcenter.heroku.com/articles/cedar)
+stack. So everything that is available to it (and as a consequence, available to
+Heroku apps) will be available for `fgrehm/devstep` environments.
 
-On top of `progrium/cedarish:cedar14`, we:
+On top of `heroku/cedar:14`, we:
 
 * Create a `developer` user to avoid using `root` and creating files with wrong permissions during development.
 * Install some extra devel packages (like `libyaml-dev`) and other "nice to have"