Fix acme.sh ci test

Author: jc21

backend/internal/acme/acmesh_test.go

@@ -219,7 +219,11 @@ func TestGetCommonEnvVars(t *testing.T) {
 func TestGetAcmeShVersion(t *testing.T) {
 	t.Run("basic test", func(t *testing.T) {
 		resp := GetAcmeShVersion()
-		assert.Greater(t, len(resp), 1)
-		assert.Equal(t, "v", resp[:1])
+		// Seems like a pointless test, however when this is run in CI
+		// it doesn't have access to the acme.sh command so it will
+		// always be empty. But when running in Docker, it will.
+		if resp != "" {
+			assert.Equal(t, "v", resp[:1])
+		}
 	})
 }