feat: allow excluded directories for tflint

README.md

@@ -188,6 +188,7 @@ Setup process:
 1. Ensure that a [`.tflint.hcl`](https://github.com/terraform-linters/tflint/blob/master/docs/user-guide/config.md) file exists in the root of the project.
 1. Ensure that the `GL_ASDF_TFLINT_VERSION` version for tflint is configured.
+1. Directories can be excluded from tflint using the `TFLINT_EXCLUDE_REGEX` variable. See the example below.
 1. The task will generate a [junit test output file](https://docs.gitlab.com/ee/ci/unit_test_reports.html) for any failed linter checks.
 ```yaml
@@ -197,6 +198,8 @@ stages:
 # Not needed if .gitlab-ci-asdf-versions.yml is included...
 variables:
   GL_ASDF_TFLINT_VERSION: ...
+  # To exclude any directories, set this variable
+  TFLINT_EXCLUDE_REGEX: './exclude1|./exclude2'
 include:
   # Not required, but recommended

tflint.yml

-
 tflint:
   stage: validate
   needs: []
@@ -8,14 +7,13 @@ tflint:
   script:
     - mkdir -p "tflint-reports/"
     # Find all TF files and lint the directories of those files
-    # See http://mywiki.wooledge.org/BashFAQ/024 for bash while subshell issue
-    - while read -r dir; do
+    - find . -type f -name '*.tf' -exec dirname {} \;|sort -u|grep -v "${TFLINT_EXCLUDE_REGEX:-__none__}" | while read -r dir; do
         junit_file="$(echo "$dir"|sed -r s/[^a-zA-Z0-9]+/-/g | sed -r s/^-+\|-+$//g).xml";
         tflint -c ".tflint.hcl" --init "${dir}";
-        tflint -c ".tflint.hcl" "${dir}" -f compact || failed=1;
-        tflint -c ".tflint.hcl" "${dir}" -f junit > "tflint-reports/${junit_file}" || failed=1;
-      done < <(find . -type f -name '*.tf' -exec dirname {} \;|sort -u);
-      if [ "${failed}" == "1" ]; then exit 1; fi
+        tflint -c ".tflint.hcl" "${dir}" -f compact || touch tflint-reports/failed;
+        tflint -c ".tflint.hcl" "${dir}" -f junit > "tflint-reports/${junit_file}" || touch tflint-reports/failed;
+      done;
+      if [ -f "tflint-reports/failed" ]; then exit 1; fi
   artifacts:
     when: always
     reports: