Envsubst filters

To better support Javascript Template literals we're changing the way this script finds and replaces environment variables. You can now pass a filter to prevent all variables from being replaced. This filter also prevents empty values from being replaced with empty strings.

envsubst is here

Since envsubst is now shipped with the nginx images, it makes no sense to have lots of custom bash code executing the find & replace logic. Therefore this new release relies on envsubst for finding & replacing environment variables.

What's Changed

Full Changelog

Added

• Docker multiarch builds
• A changelog to keep track of upgrading
• Goss test config for serverspec like testing
• CI and weekly image building with cirrus-ci

Fixed

• Typo in license file
• Healthchecks no longer show up in the accesslogs

Changed

• Docker base image is now debain
• BREAKING: Removed the custom bash script for a more stable an predictable envsubst implementation. Variables your files should no longer be prefixed with container.env. Example: {container.env.HOST} now becomes ${HOST}
• BREAKING: Dropped s6 as init system becuase I now use the docker-entrypoint.sh from upstream nginx to replace the variables

Support for Symlinks

We (together with @RickvdStaaij) altered some behaviour in the find & replace script to support symlinks. Because this is Altered behavior in the file locations a new major seems appropriate.