diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
index 8401d71..f39abef 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        image: ['nightly-bionic', 'nightly-focal', 'nightly-centos8', 'nightly-amazonlinux2']
+        image: ['nightly-5.6-bionic', 'nightly-5.6-focal', 'nightly-5.6-centos8', 'nightly-5.6-amazonlinux2']
     
     container:
       image: swiftlang/swift:${{ matrix.image }}
diff --git a/.gitignore b/.gitignore
index de3e51c..c3297d7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,6 +2,7 @@
 /.build
 /.swiftpm
 /.vscode
+/.devcontainer
 /Packages
 /*.xcodeproj
 xcuserdata/
diff --git a/.swiftformat b/.swiftformat
index 495bbcd..fbc7bb8 100644
--- a/.swiftformat
+++ b/.swiftformat
@@ -23,4 +23,4 @@
 --wrapcollections before-first
 
 #file header
---header "//===----------------------------------------------------------------------===//\n//\n// This source file is part of the Hummingbird server framework project\n//\n// Copyright (c) {created.year}-{year} the Hummingbird authors\n// Licensed under Apache License v2.0\n//\n// See LICENSE.txt for license information\n// See hummingbird/CONTRIBUTORS.txt for the list of Hummingbird authors\n//\n// SPDX-License-Identifier: Apache-2.0\n//\n//===----------------------------------------------------------------------===//"
+#--header "//===----------------------------------------------------------------------===//\n//\n// This source file is part of the Hummingbird server framework project\n//\n// Copyright (c) {created.year}-{year} the Hummingbird authors\n// Licensed under Apache License v2.0\n//\n// See LICENSE.txt for license information\n// See hummingbird/CONTRIBUTORS.txt for the list of Hummingbird authors\n//\n// SPDX-License-Identifier: Apache-2.0\n//\n//===----------------------------------------------------------------------===//"