From d9de349d7f176838187eac5327c42655fa068e74 Mon Sep 17 00:00:00 2001
From: Rhys Arkins <rhys@arkins.net>
Date: Wed, 28 Apr 2021 15:45:33 +0200
Subject: [PATCH] fix(gomod): use latest go version when binarySource=docker
 (#9764)

Fixes #9761
---
 lib/manager/gomod/__snapshots__/extract.spec.ts.snap | 2 +-
 lib/manager/gomod/extract.spec.ts                    | 2 +-
 lib/manager/gomod/extract.ts                         | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/lib/manager/gomod/__snapshots__/extract.spec.ts.snap b/lib/manager/gomod/__snapshots__/extract.spec.ts.snap
index a553b66ece19b2..24e3d87ab8df1f 100644
--- a/lib/manager/gomod/__snapshots__/extract.spec.ts.snap
+++ b/lib/manager/gomod/__snapshots__/extract.spec.ts.snap
@@ -3,7 +3,7 @@
 exports[`manager/gomod/extract extractPackageFile() extracts constraints 1`] = `
 Object {
   "constraints": Object {
-    "go": "1.13",
+    "go": "^1.13",
   },
   "deps": Array [
     Object {
diff --git a/lib/manager/gomod/extract.spec.ts b/lib/manager/gomod/extract.spec.ts
index d0ae06a506032d..55cc356966f988 100644
--- a/lib/manager/gomod/extract.spec.ts
+++ b/lib/manager/gomod/extract.spec.ts
@@ -21,7 +21,7 @@ describe(getName(__filename), () => {
     it('extracts constraints', () => {
       const res = extractPackageFile(gomod3);
       expect(res).toMatchSnapshot();
-      expect(res.constraints.go).toEqual('1.13');
+      expect(res.constraints.go).toEqual('^1.13');
     });
     it('extracts multi-line requires', () => {
       const res = extractPackageFile(gomod2).deps;
diff --git a/lib/manager/gomod/extract.ts b/lib/manager/gomod/extract.ts
index 8bc055941ce992..d5146e28bf2b88 100644
--- a/lib/manager/gomod/extract.ts
+++ b/lib/manager/gomod/extract.ts
@@ -43,7 +43,7 @@ export function extractPackageFile(content: string): PackageFile | null {
     for (let lineNumber = 0; lineNumber < lines.length; lineNumber += 1) {
       let line = lines[lineNumber];
       if (line.startsWith('go ') && validRange(line.replace('go ', ''))) {
-        constraints.go = line.replace('go ', '');
+        constraints.go = line.replace('go ', '^');
       }
       const replaceMatch = /^replace\s+[^\s]+[\s]+[=][>]\s+([^\s]+)\s+([^\s]+)/.exec(
         line