try caching terraform

.gitea/workflows/apply-master.yaml

@@ -1,6 +1,6 @@
 name: Terraform validate and apply
 run-name: ${{ gitea.actor }} applying terraform
-on: 
+on:
   push:
     branches:
       - master
@@ -8,9 +8,9 @@ env:
   AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
   AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
   CLOUDFLARE_API_TOKEN: ${{ secrets.CLOUDFLARE_API_TOKEN }}
-
   TF_VAR_aws_region: ${{ vars.TF_VAR_aws_region }}
   TF_VAR_site_domain: ${{ vars.TF_VAR_site_domain }}
+  TF_PLUGIN_CACHE_DIR: ${{ github.workspace }}/.terraform.d/plugin-cache
 jobs:
   nix:
     strategy:
@@ -24,6 +24,15 @@ jobs:
       - run: ls
       - name: Set up terraform
         uses: hashicorp/setup-terraform@v3
+      - name: Set up and configure Terraform plugin cache
+        run: |
+          mkdir --parents $TF_PLUGIN_CACHE_DIR
+      - name: Cache terraform
+        uses: actions/cache@v4
+        with:
+          path: ${{ env.TF_PLUGIN_CACHE_DIR }}
+          key: ${{ runner.os }}-terraform-${{hashFiles('**.terraform.lock.hcl') }}
+          restore-keys: ${{ runner.os }}-terraform-
       - name: Init
         id: init
         run: terraform init
@@ -36,4 +45,3 @@ jobs:
       - name: Plan
         id: plan
         run: terraform plan -no-color -input=false
-