fix: Fix projectDir pattern in config schema

lib/configSchema.js

@@ -98,7 +98,7 @@ const schema = {
     },
     projectDir: {
       type: 'string',
-      pattern: '/^(\\.\\/?|(\\.\\/)?\\.\\.(\\/\\.\\.)*\\/?)$/',
+      pattern: '^(\\.\\/?|(\\.\\/)?\\.\\.(\\/\\.\\.)*\\/?)$',
     },
     /*
      * Provider specific properties are extended in respected provider plugins.

test/fixtures/programmatic/multiService/file.json

@@ -0,0 +1,3 @@
+{
+  "foo": "bar"
+}

test/fixtures/programmatic/multiService/serviceA/index.js

@@ -0,0 +1,7 @@
+'use strict';
+
+module.exports.handler = (event, context, callback) =>
+  callback(null, {
+    statusCode: 200,
+    body: JSON.stringify({}),
+  });

test/fixtures/programmatic/multiService/serviceA/serverless.yml

@@ -0,0 +1,24 @@
+service: service
+
+configValidationMode: error
+frameworkVersion: '*'
+
+projectDir: ../
+
+provider:
+  name: aws
+  runtime: nodejs12.x
+  lambdaHashingVersion: 20201221
+
+custom:
+  env: ${env:ENV_SOURCE_TEST, null}
+  file: ${file(../file.json)}
+  opt: ${opt:stage, null}
+  self: ${self:custom.file.foo}
+  strToBool: ${strToBool('false')}
+
+functions:
+  foo:
+    handler: index.handler
+  other:
+    handler: index.handler

test/unit/scripts/serverless.test.js

@@ -100,6 +100,18 @@ describe('test/unit/scripts/serverless.test.js', () => {
     ).to.include('nestedInPrototype: bar-in-prototype');
   });
 
+  it('should support multi service project', async () => {
+    expect(
+      String(
+        (
+          await spawn('node', [serverlessPath, 'print'], {
+            cwd: path.resolve(programmaticFixturesPath, 'multiService/serviceA'),
+          })
+        ).stdoutBuffer
+      )
+    ).to.include('self: bar');
+  });
+
   it('should rejected unresolved "provider" section', async () => {
     try {
       await spawn('node', [serverlessPath, 'print'], {