Make helm diff color optional (#383)

* Add helm-diff-color option to action

README.md

@@ -18,6 +18,7 @@ This action works on Linux, macOS and Windows
 - `helm-plugins` : Comma separated list of Helm plugins to install. Default `https://github.com/databus23/helm-diff`
 - `helmfile-auto-init` : Whether to run `helmfile init` before running helmfile command. Default `"false"`
 - `helmfile-kubeconfig-context` : Kubeconfig context. Default `""`, if not empty, it will be written to `$HOME/.kube/config`
+- `helm-diff-color`: Enable helm diff plugin color output. Default `"true"`.
 
 Example with optional inputs
 

action.yaml

@@ -29,6 +29,10 @@ inputs:
     required: false
     description: 'kubeconfig context, it not empty, it will be written to the kubeconfig file'
     default: ''
+  helm-diff-color:
+    required: false
+    description: 'Enable helm diff plugin color output'
+    default: 'true'
 outputs:
   exit-code:
     description: 'Exit code of helmfile. Useful to handle diff --detailed-exitcode'

src/main.ts

@@ -15,13 +15,15 @@ async function run(): Promise<void> {
     const helmfileKubeconfigContext = core.getInput(
       'helmfile-kubeconfig-context'
     );
+    const helmDiffColor = core.getInput('helm-diff-color');
 
     core.debug(`helmfile-args: ${helmfileArgs}`);
     core.debug(`helmfile-version: ${helmfileVersion}`);
     core.debug(`helmfile-workdirectory: ${helmfileWorkDirectory}`);
     core.debug(`helm-version: ${helmVersion}`);
     core.debug(`helm-plugins: ${helmPlugins}`);
     core.debug(`helmfile-auto-init: ${helmfileAutoInit}`);
+    core.debug(`helm-diff-color: ${helmDiffColor}`);
 
     core.startGroup('Install helmfile');
     await Promise.all([installHelmfile(helmfileVersion)]);
@@ -99,10 +101,10 @@ async function run(): Promise<void> {
 
     options.ignoreReturnCode = true;
 
-    // set HELM_DIFF_COLOR=true into the environment
+    // set HELM_DIFF_COLOR=true into the helmfile command's environment
     options.env = {
-      ...process.env,
-      HELM_DIFF_COLOR: 'true'
+      HELM_DIFF_COLOR: helmDiffColor,
+      ...process.env
     };
 
     const processExitCode = await exec.exec(