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heroku-buildpack-python/builds/README.md
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Ed Morley e621ff4d5e Improve the workflow for generating binaries for Heroku-16 (#387)
* Updates bob-builder to a version that clears out the previous
  build directory, which prevents the stale files seen in #379.
* Adds a `buildenv-heroku-16` Make command to simplify the
  building and use of the Heroku-16 binary build environment.
* Sets `S3_BUCKET` and `S3_PREFIX` in the Docker image, to save
  having to do so manually each time.
* Removes the duplication of the bob-builder dependency between
  `Dockerfile` and `requirements.txt`.
* Disables the pip version check during Docker build, to avoid the
  noisy stderr warning about Ubuntu 16.04 pip being older (v8.1.1).
* Adds a `.dockerignore` to speed up the Docker build, by reducing
  the build context transferred to the daemon from 60MB to 2MB.
* Applies some Dockerfile best practices like disabling/removing
  cached files (since layer invalidation makes caching pointless).
2017-05-25 11:55:57 -07:00

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# Python Buildpack Binaries
For Cedar-14 stack
------------------
To get started with it, create an app on Heroku inside a clone of this repository, and set your S3 config vars:
$ heroku create --buildpack https://github.com/heroku/heroku-buildpack-python#not-heroku
$ heroku config:set WORKSPACE_DIR=builds
$ heroku config:set AWS_ACCESS_KEY_ID=<your_aws_key>
$ heroku config:set AWS_SECRET_ACCESS_KEY=<your_aws_secret>
$ heroku config:set S3_BUCKET=<your_s3_bucket_name>
Then, shell into an instance and run a build by giving the name of the formula inside `builds`:
$ heroku run bash
Running `bash` attached to terminal... up, run.6880
~ $ bob build runtimes/python-2.7.6
Fetching dependencies... found 2:
- libraries/sqlite
Building formula runtimes/python-2.7.6:
=== Building Python 2.7.6
Fetching Python v2.7.6 source...
Compiling...
If this works, run `bob deploy` instead of `bob build` to have the result uploaded to S3 for you.
To speed things up drastically, it'll usually be a good idea to `heroku run bash --size PX` instead.
For Heroku-16 stack
-------------------
1. Ensure GNU Make and Docker are installed.
2. From the root of the buildpack repository, run: `make buildenv-heroku-16`
3. Follow the instructions displayed!
Enjoy :)