terraform の実行をdocker コンテナ経由で行うよう変更する

docker run -v $(pwd):/app -w /app hashicorp/terraform:0.12.0 init

docker run -v $(pwd):/app -w /app hashicorp/terraform:0.12.0 apply \
--auto-approve \
-var "PROJECT_ID=$xxxxx" \
-var "DEFAULT_REGION=$yyyyy" \
...

The issue gives Docker commands for Terraform 0.12.0 but names no target files. First locate the repository's Terraform configuration and any existing scripts or documentation for init and apply, then compare how variables such as PROJECT_ID and DEFAULT_REGION are passed. Done means the documented or scripted Terraform execution uses the specified container workflow consistently.

Written by the indexing model from the issue text.