Add documentation CI job

To ensure that 'make docs' functionality does not break.

.github/workflows/docs.yaml

@@ -0,0 +1,28 @@
+# Copyright 2024 Hewlett Packard Enterprise Development LP
+name: Docs
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+jobs:
+  docs:
+    runs-on: ubuntu-24.04
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-go@v2
+        with:
+          go-version: '1.22.3'
+      - uses: hashicorp/setup-terraform@v3
+        with:
+          terraform_version: 1.9.5
+          # set wrapper to false, otherwise any time
+          # terraform is run the first line of stdout is
+          # the path to the terraform binary. This causes
+          # eg the output of "terraform providers schema -json"
+          # be unusable 
+          terraform_wrapper: false
+      - run: make install-experimental
+      - run: go install github.com/hashicorp/terraform-plugin-docs/cmd/[email protected]
+      - run: make docs

Makefile

@@ -26,12 +26,14 @@ install-experimental:
 	go install -tags experimental  ./...
 
 docs:
-	echo -e ${PROVIDER_TF} > __docs.tf; \
-	tempfile=$$(mktemp); \
-	terraform providers schema -json | \
-	sed '[email protected]/hewlettpackard/hpegl-pcbe-terraform-resources@hpegl@g' > $$tempfile; \
-	tfplugindocs generate --providers-schema $$tempfile -provider-name hpegl;
-	rm __docs.tf
+	printf "${PROVIDER_TF}" > __docs.tf; \
+	tfconfig=$$(mktemp); \
+	sed "s@__HOME__@${HOME}@g" test/.terraformrc > $$tfconfig; \
+	schemafile=$$(mktemp); \
+	env TF_CLI_CONFIG_FILE=$$tfconfig terraform providers schema -json | \
+	sed '[email protected]/hewlettpackard/hpegl-pcbe-terraform-resources@hpegl@g' > $$schemafile; \
+	rm __docs.tf; \
+	tfplugindocs generate --provider-name hpegl --providers-schema $$schemafile
 
 test:
 	go test ./...
@@ -42,9 +44,9 @@ testacc:
 
 testacc-simulation:
 	go install -tags experimental,simulation ./cmd/...
-	tempfile=$$(mktemp); \
-	sed "s@__HOME__@${HOME}@g" test/.terraformrc > $$tempfile; \
-	env TF_ACC=1 env TF_CLI_CONFIG_FILE=$$tempfile \
+	tfconfig=$$(mktemp); \
+	sed "s@__HOME__@${HOME}@g" test/.terraformrc > $$tfconfig; \
+	env TF_ACC=1 env TF_CLI_CONFIG_FILE=$$tfconfig \
 		go test -v -tags simulation ./test/...
 
 lint: