repaired docker PATH export and added tests both for docker and k8s (#17)

* repaired docker PATH export and added tests both for docker and k8s

* added todo comments about next major version and typeof prepend path

packages/k8s/src/k8s/utils.ts

@@ -100,7 +100,10 @@ export function writeEntryPointScript(
 ): { containerPath: string; runnerPath: string } {
   let exportPath = ''
   if (prependPath?.length) {
-    exportPath = `export PATH=${prependPath.join(':')}:$PATH`
+    // TODO: remove compatibility with typeof prependPath === 'string' as we bump to next major version, the hooks will lose PrependPath compat with runners 2.293.0 and older
+    const prepend =
+      typeof prependPath === 'string' ? prependPath : prependPath.join(':')
+    exportPath = `export PATH=${prepend}:$PATH`
   }
   let environmentPrefix = ''
 

packages/k8s/tests/run-script-step-test.ts

@@ -71,4 +71,38 @@ describe('Run script step', () => {
       )
     ).resolves.not.toThrow()
   })
+
+  it('Should have path variable changed in container with prepend path string', async () => {
+    runScriptStepDefinition.args.prependPath = '/some/path'
+    runScriptStepDefinition.args.entryPoint = '/bin/bash'
+    runScriptStepDefinition.args.entryPointArgs = [
+      '-c',
+      `'if [[ ! $(env | grep "^PATH=") = "PATH=${runScriptStepDefinition.args.prependPath}:"* ]]; then exit 1; fi'`
+    ]
+
+    await expect(
+      runScriptStep(
+        runScriptStepDefinition.args,
+        prepareJobOutputData.state,
+        null
+      )
+    ).resolves.not.toThrow()
+  })
+
+  it('Should have path variable changed in container with prepend path string array', async () => {
+    runScriptStepDefinition.args.prependPath = ['/some/other/path']
+    runScriptStepDefinition.args.entryPoint = '/bin/bash'
+    runScriptStepDefinition.args.entryPointArgs = [
+      '-c',
+      `'if [[ ! $(env | grep "^PATH=") = "PATH=${runScriptStepDefinition.args.prependPath}:"* ]]; then exit 1; fi'`
+    ]
+
+    await expect(
+      runScriptStep(
+        runScriptStepDefinition.args,
+        prepareJobOutputData.state,
+        null
+      )
+    ).resolves.not.toThrow()
+  })
 })