Initial commit

.github/actions/action.yml

@@ -0,0 +1,35 @@
+name: 'kube-linter'
+description: 'Scan directory with kube-linter'
+inputs:
+  directory:
+    description: 'Directory to scan '
+    required: true
+  config:
+    description: 'Path to config file'
+    required: false
+outputs:
+  lint-txt:
+    description: 'Output from linting'
+    value: ${{ steps.lint.outputs.lint-txt }}
+runs:
+  using: "composite"
+  steps:
+    - name: Download latest kube-linter
+      run: |
+        LOCATION=$(curl -s https://api.github.com/repos/stackrox/kube-linter/releases/latest \
+        | grep "tag_name" \
+        | awk '{print "https://github.com/stackrox/kube-linter/releases/download/" substr($2, 2, length($2)-3) "/kube-linter-linux.tar.gz"}')
+        curl -s -L -o kube-linter-linux.tar.gz $LOCATION
+        tar -xf kube-linter-linux.tar.gz -C "${GITHUB_WORKSPACE}/"
+      shell: bash
+    - id: lint
+      run: |
+        cd "${GITHUB_WORKSPACE}"
+        if [ -z ${{ inputs.config }} ]; then
+          export CONFIG=""
+        else
+          export CONFIG="--config ${{ inputs.config }}"
+        fi
+        ./kube-linter $CONFIG lint ${{ inputs.directory }}
+      shell: bash
+

README.md

@@ -1 +1,25 @@
 # kube-linter-action
+
+# kube-linter-action GitHub action
+
+This is a GitHub action for scanning Kubernetes deployment files with [kube-linter](https://github.com/stackrox/kube-linter).  This includes both the action itself (.github/actions) and sample GitHub workflow (.github/workflows) and a test YAML.
+
+Quick deployment:
+
+1.  Create a new GitHub repo.
+2.  Push all files from the `sample` directory into the repo.
+3.  The `kube-linter.yml` workflow will run as an action every time there's a new push to this repo.
+
+The action takes two parameters.
+
+```
+      - name: Scan repo
+        id: kube-lint-repo
+        uses: stackrox/kube-linter-action@v0.0.1
+        with:
+          directory: yamls
+          config: .kube-linter/config.yaml
+```
+
+* `directory` is mandatory -- this is the directory of deployment files to scan.  
+* `config` is optional -- this is the path to a [configuration file](https://github.com/stackrox/kube-linter/blob/main/config.yaml.example) if you wish to use a non-default configuration.

sample/.github/workflows/kube-linter.yml

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+name: Check Kubernetes YAMLs
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  scan:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Scan repo
+        id: kube-lint-repo
+        uses: stackrox/kube-linter-action@v0.0.1
+        with:
+          directory: yamls
+          config: .kube-linter/config.yaml
+

sample/yaml/deploy.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+  labels:
+    app: nginx
+spec:
+  replicas: 3
+  selector:
+    matchLabels:
+      app: nginx
+  template:
+    metadata:
+      labels:
+        app: nginx
+    spec:
+      containers:
+      - name: nginx
+        image: nginx:1.14.2
+        ports:
+        - containerPort: 80