Remove Dockerfile templating in main build

[JulianCBC]

Build args can be used to specify the version of containers in FROM lines, so skip a step in the build process by passing the Terraform version in as an argument instead of templating the Dockerfile.

I haven't done the same conversion to the EKS image as it doesn't build at present.

This conflicts with #27 so I'll sort that out once one of these is merged.

[ozbillwang]

Thanks for your PR. let's hold this change, until we plan to put OpenTofu (need be GA release) in it.

The existing tag could be terraform version, since no conflict.

[JulianCBC]

I don't understand, this isn't changing the tags, this is just some cleanup.

[ozbillwang]

@JulianCBC

Looks fine to me now.

But there are some new PRs merged recently, could you resolve the conflicts?

[ozbillwang]

TODO list:

• add opentofu binary in this image
• define new tags
• No latest tag any more.
• rollback the new tags we merged last time (1, 1.8)

New tags for discussion

• alpine/terragrunt:tf1.8.3
• alpine/terragrunt:otf1.7.1 or alpine/terragrunt:ot1.7.1

[JulianCBC]

• alpine/terragrunt:otf1.7.1 or alpine/terragrunt:ot1.7.1

"tf" is TerraForm, i.e. letter per syllable, so "otf" being OpenToFu also makes sense.

[JulianCBC]

I've rebased this over the latest changes in master. Let's handle that TODO list in separate pull requests.

[ozbillwang]

TODO list:

• add opentofu binary in this image
• define new tags
• No latest tag any more.
• rollback the new tags we merged last time (1, 1.8)

New tags for discussion

• alpine/terragrunt:tf1.8.3
• alpine/terragrunt:otf1.7.1 or alpine/terragrunt:ot1.7.1

opentofu has been installed in the latest image now.

docker run -ti --rm alpine/terragrunt tofu --version
OpenTofu v1.7.1
on linux_amd64

For examples, below tags are supported now:

• alpine/terragrunt:latest
• alpine/terragrunt:1.8.4 (terraform version)
• alpine/terragrunt:tf1.8.4 (terraform version)
• alpine/terragrunt:otf1.7.1 (opentofu version)