runtimeproxy: fix env lost (#957)

Signed-off-by: lucming <2876757716@qq.com>

Author: lucming

pkg/runtimeproxy/server/docker/utils.go

@@ -235,7 +235,7 @@ func generateExpectedCgroupParent(cgroupDriver, cgroupParent string) string {
 func splitDockerEnv(dockerEnvs []string) map[string]string {
 	res := make(map[string]string)
 	for _, str := range dockerEnvs {
-		tokens := strings.Split(str, "=")
+		tokens := strings.SplitN(str, "=", 2)
 		if len(tokens) != 2 {
 			continue
 		}

pkg/runtimeproxy/server/docker/utils_test.go

@@ -415,6 +415,12 @@ func Test_splitDockerEnv(t *testing.T) {
 				"b": "c",
 			},
 		},
+		{
+			dockerEnvs: []string{"a=b=c"},
+			expectedHookEnvs: map[string]string{
+				"a": "b=c",
+			},
+		},
 		{
 			dockerEnvs: []string{"a=", "b"},
 			expectedHookEnvs: map[string]string{