bump-version: docker does not like +

Author: xgoffin

bump-version/version.go

@@ -13,7 +13,7 @@ type version struct {
 }
 
 func parse(t string) (*version, error) {
-	v, err := semver.NewVersion(t)
+	v, err := semver.NewVersion(strings.Replace(t, "_", "+", -1))
 
 	if err != nil {
 		return nil, err
@@ -55,7 +55,7 @@ func (v *version) RC() int64 {
 }
 
 func (v *version) String() string {
-	return fmt.Sprintf("v%s", v.Version.String())
+	return strings.Replace(fmt.Sprintf("v%s", v.Version.String()), "+", "_", -1)
 }
 
 func (v *version) Compare(v2 *version) int {

bump-version/version_test.go

@@ -22,15 +22,15 @@ func TestStrategy(t *testing.T) {
 		{
 			have:     "v0.0.0",
 			strategy: bumpPre,
-			want:     "v0.0.1-rc1+pre1",
+			want:     "v0.0.1-rc1_pre1",
 		},
 		{
-			have:     "v0.0.1-rc1+pre1",
+			have:     "v0.0.1-rc1_pre1",
 			strategy: bumpRC,
 			want:     "v0.0.1-rc2",
 		},
 		{
-			have:     "v0.0.1-rc1+pre1",
+			have:     "v0.0.1-rc1_pre1",
 			strategy: bumpMajor,
 			want:     "v1.0.0",
 		},