Improve CI pipeline

.github/workflows/lint.yml

@@ -2,40 +2,52 @@ name: Lint
 on: [push, pull_request]
 
 jobs:
+  tflint:
+    name: TFLint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@master
+      - name: TFLint
+        uses: docker://wata727/tflint
+  
+  fmt:
+    name: Code Format
+    runs-on: ubuntu-latest
+    container:
+      image: hashicorp/terraform:latest
+    steps:
+      - uses: actions/checkout@master
+      - run: terraform fmt --recursive -check=true
+  
+  docs:
+    name: Docs
+    runs-on: macOS-latest
+    steps:
+      - uses: actions/checkout@master
+      - name: Install Deps
+        run: brew install pre-commit terraform-docs terraform
+      - name: Check Docs
+        run: pre-commit run --show-diff-on-failure --all-files terraform_docs
+
   validate:
     name: Validate
     runs-on: ubuntu-latest
+    container:
+      image: hashicorp/terraform:latest
     steps:
-    - uses: actions/checkout@master
-    # - uses: actions/setup-ruby@v1
-    #   with:
-    #     ruby-version: '2.4.6'
-    # - name: Install Kitchen-Terraform
-    #   run: |
-    #     gem install bundler --no-document
-    #     bundle install
-    - name: Install Terraform
-      run: |
-        export TERRAFORM_VERSION=$(curl -s https://checkpoint-api.hashicorp.com/v1/check/terraform | jq -r -M '.current_version')
-        curl --silent --output terraform.zip "https://releases.hashicorp.com/terraform/${TERRAFORM_VERSION}/terraform_${TERRAFORM_VERSION}_linux_amd64.zip"
-        unzip terraform.zip ; rm -f terraform.zip; chmod +x terraform
-        mkdir -p ${HOME}/bin ; export PATH=${PATH}:${HOME}/bin; mv terraform ${HOME}/bin/
-        terraform -v
-    - name: Validate Code
-      env:
-        AWS_REGION: 'us-east-1'
-        TF_VAR_region: ${AWS_REGION}
-        TF_WARN_OUTPUT_ERRORS: 1
-      run: |
-        terraform init
-        terraform fmt -check=true
-        terraform validate -var "region=${AWS_REGION}" -var "vpc_id=vpc-123456" -var "subnets=[\"subnet-12345a\"]" -var "workers_ami_id=ami-123456" -var "cluster_ingress_cidrs=[]" -var "cluster_name=test_cluster"
-    - name: Validate Examples
-      run: |
-        for example in $(find examples -maxdepth 1 -mindepth 1 -type d); do
-          cd $example
+      - uses: actions/checkout@master
+      - name: Validate Code
+        env:
+          AWS_REGION: 'us-east-1'
+          TF_WARN_OUTPUT_ERRORS: 1
+        run: |
           terraform init
-          terraform fmt -check=true
-          terraform validate
-          cd -
-        done
+          terraform validate -var "region=${AWS_REGION}" -var "vpc_id=vpc-123456" -var "subnets=[\"subnet-12345a\"]" -var "workers_ami_id=ami-123456" -var "cluster_ingress_cidrs=[]" -var "cluster_name=test_cluster"
+      - name: Validate Examples
+        run: |
+          for example in $(find examples -maxdepth 1 -mindepth 1 -type d); do
+            cd $example
+            terraform init
+            terraform validate
+            cd -
+          done