feat(lint): add caching layer to terraform

lint/action.yaml

@@ -37,6 +37,33 @@ runs:
     - name: Setup tools
       # Provide opportunity to install terraform, golang, and others
       uses: open-turo/action-setup-tools@v2
+
+    - name: Configure Terraform plugin cache
+      shell: bash
+      run: |
+        echo "TF_PLUGIN_CACHE_DIR=$HOME/.terraform.d/plugin-cache" >>"$GITHUB_ENV"
+        mkdir --parents "$HOME/.terraform.d/plugin-cache"
+
+    - name: Compute pre-commit cache key
+      if: inputs.s3-bucket-name != ''
+      id: pre_commit_cache_key
+      run: |
+        echo "key=${{ hashFiles('**/.pre-commit-config.yaml') }}" >> $GITHUB_OUTPUT
+      shell: bash
+    - name: Load cached terraform plugins if available
+      if: inputs.s3-bucket-name != ''
+      uses: everpcpc/actions-cache@v2
+      id: read_cache
+      with:
+        bucket: ${{ inputs.s3-bucket-name }}
+        use-fallback: false
+        path: ~/.terraform.d/plugin-cache
+        key: ${{ env.cache-name }}-${{ steps.pre_commit_cache_key.outputs.key }}
+        restore-keys: ${{ env.cache-name }}-
+      env:
+        AWS_REGION: ${{ inputs.s3-bucket-region }}
+        cache-name: ${{ github.event.repository.name }}/cache-tf-plugins
+
     - name: Pre-commit
       uses: open-turo/action-pre-commit@v3
       with:

test/action.yaml

@@ -39,6 +39,19 @@ runs:
       run: |
         if [[ ! -f ./script/setup ]]; then echo "Missing required file: ./script/setup"; exit 1; fi
         if [[ ! -f ./script/test ]]; then echo "Missing required file: ./script/test"; exit 1; fi
+    - name: Configure Terraform plugin cache
+      shell: bash
+      run: |
+        echo "TF_PLUGIN_CACHE_DIR=$HOME/.terraform.d/plugin-cache" >>"$GITHUB_ENV"
+        mkdir --parents "$HOME/.terraform.d/plugin-cache"
+    - name: Cache Terraform
+      uses: actions/cache@v4
+      with:
+        path: |
+          ~/.terraform.d/plugin-cache
+        key: terraform-${{ runner.os }}-${{ hashFiles('**/.terraform.lock.hcl') }}
+        restore-keys: |
+          terraform-${{ runner.os }}-
     - name: Setup
       shell: bash
       run: ./script/setup