Configures supported operating system check (#981)

.github/ISSUE_TEMPLATE/BUG_REPORT.md

@@ -8,16 +8,21 @@ labels:
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 ## Describe the bug
+
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 ## Reproduction Steps
+
 <!-- Steps to reproduce the behavior. -->
 
 ## Logs
+
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 ## Workflow
+
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 ## Additional Comments
+
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src/constants.ts

@@ -148,3 +148,12 @@ export enum Status {
   SKIPPED = 'skipped',
   RUNNING = 'running'
 }
+
+/* Platform codes. */
+export enum OperatingSystems {
+  LINUX = 'Linux',
+  WINDOWS = 'Windows',
+  MACOS = 'macOS'
+}
+
+export const SupportedOperatingSystems = [OperatingSystems.LINUX]

src/util.ts

@@ -1,7 +1,12 @@
-import {isDebug} from '@actions/core'
+import {isDebug, info} from '@actions/core'
 import {existsSync} from 'fs'
 import path from 'path'
-import {ActionInterface, RequiredActionParameters} from './constants'
+import {
+  ActionInterface,
+  OperatingSystems,
+  RequiredActionParameters,
+  SupportedOperatingSystems
+} from './constants'
 
 /* Replaces all instances of a match in a string. */
 const replaceAll = (input: string, find: string, replace: string): string =>
@@ -66,6 +71,16 @@ export const checkParameters = (action: ActionInterface): void => {
       `The directory you're trying to deploy named ${action.folderPath} doesn't exist. Please double check the path and any prerequisite build scripts and try again. ❗`
     )
   }
+
+  if (
+    SupportedOperatingSystems.includes(
+      process.env.RUNNER_OS as OperatingSystems
+    )
+  ) {
+    info(
+      `The operating system you're using is not supported and results may be varied. Please refer to the documentation for more details. ❗`
+    )
+  }
 }
 
 /* Suppresses sensitive information from being exposed in error messages. */