Exclude terraform providers and .git repository when hashing workspace (

#197)

* Exclude terraform providers when hashing workspace

* Also exclude .git directories

internal/terraform/terraform.go

@@ -266,9 +266,9 @@ func (h Harness) DeleteCurrentWorkspace(ctx context.Context) error {
 	return Classify(err)
 }
 
-// GenerateChecksum calculates the md5sum of the workspace to see if terraform init needs to run
+// GenerateChecksum calculates the md5sum of the workspace (excluding installed providers) to see if terraform init needs to run
 func (h Harness) GenerateChecksum(ctx context.Context) (string, error) {
-	command := "/usr/bin/find . -type f -exec /usr/bin/md5sum {} + | LC_ALL=C /usr/bin/sort | /usr/bin/md5sum | /usr/bin/awk '{print $1}'"
+	command := "/usr/bin/find . -path ./.git -prune -o -path ./.terraform/providers -prune -o -type f -exec /usr/bin/md5sum {} + | LC_ALL=C /usr/bin/sort | /usr/bin/md5sum | /usr/bin/awk '{print $1}'"
 	cmd := exec.CommandContext(ctx, "/bin/sh", "-c", command) //nolint:gosec
 	cmd.Dir = h.Dir