mikewaters / docker-terragrunt

Simple terragrunt/terraform image.

docker-terragrunt

Why

In order to share a terraform state file among multiple users, it must be centrally available (and lockable). Terraform provides this functiojnality natively (vie backend feature), and terragrunt is a tool that (among other things) makes this process easier. However, in order to share a tfstate file, you must use the version of terraform that initially created the tfstate file. To facilitate interaction with remotely-stored tfstate files managed with terragrunt in a build environment, this docker image was created. The images stored in the docker hub will be versioned by terraform release number, so they can easily be pinned by tag in a build script or CI config file.

Bump a release

Build and push to Docker Hub are handled automatically at CircleCI.
In order to facilitate, I need to increment the VERSION file and tag the repo appropriately.

Workflow:

• bump the terraform version in VERSION file.
• commit and push, wait for the build to complete to certify that the docker image will work
• create a tag, using the tag.sh helper
• push the tag: git push --tags

Remove a tag ("I done effed up")

• git tag -d tf-X.Y.Z
• git push origin :tf-X.Y.Z

Dockerfile borrowed from https://github.com/chrisns/docker-terragrunt