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EverTrue Ruby Docker baseimage

This provides a base image, itself based on the various flavors of phusion/passenger-docker, to provide a consistent set of features commonly used in EverTrue Docker-ized apps.

Specifically, those features are:

  • Bootstrapping secrets from Vault into environment variables
    • A file listing the env vars for NGINX is generated as well
  • Enabling NGINX if desired

Usage

Five images are built from this project:

  • evertrue/passenger-ruby21
  • evertrue/passenger-ruby22
  • evertrue/passenger-ruby23
  • evertrue/passenger-ruby24
  • evertrue/passenger-full

Add one of those to top of your project’s Dockerfile, specifying a tag:

FROM registry.evertrue.com/evertrue/passenger-ruby24:0.9.20

Config

In order to customize the init process, a YAML config file will need to be provided.

Here is an example image.yml that enables NGINX and sets up a set of env vars from Vault:

nginx_enabled: true
vault_env:
  secret/default/dna:
    EVERTRUE_APP_KEY: evertrue.app_key
    EVERTRUE_AUTH: evertrue.auth
    ANOTHER_ENV_VAR: another_vault_secret_data_key

Alternatively, you can just provide an array of env vars, and it will use that as both the key for the Vault data object, and the key for the final env var.

vault_env:
  secret/default/dna:
    - EVERTRUE_APP_KEY
    - EVERTRUE_AUTH
    - ANOTHER_ENV_VAR

If you omit nginx_enabled, it will be left disabled (the default state for the Phusion Passenger images).

Ensure that the image.yml is placed at /home/app/webapp/image.yml:

COPY config/image.yml /home/app/webapp/image.yml

Then, build your project’s image.

Development

The version for this image is set in the Makefile, please be sure to rev it before building and pushing new versions of the images this project generates.

To build an individual image, look in the Makefile for the corresponding build task.

To build them all:

$ make all

To perform a release:

$ make release