diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 0000000..8224c2a
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,48 @@
+name: Build
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+    name: Build with Slurm ${{ matrix.slurm }}
+    runs-on: ubuntu-latest
+    container: ${{ matrix.container }}
+
+    env:
+      SOURCEDIR: ${{ github.workspace }}
+      BUILDDIR: ${{ github.workspace}}/build
+
+    strategy:
+      fail-fast: false
+
+      matrix:
+        container:
+          - ubuntu:lunar
+          - ubuntu:mantic
+          - ubuntu:noble
+        include:
+          - container: ubuntu:lunar
+            slurm: 22.05
+          - container: ubuntu:mantic
+            slurm: 23.02
+          - container: ubuntu:noble
+            slurm: 23.11
+
+    steps:
+      - name: Install dependencies
+        run: sudo apt-get install -y cmake ninja-build libslurm-dev
+
+      - uses: actions/checkout@v4
+
+      - name: Configure
+        run: cmake -GNinja -S $SOURCEDIR -B $BUILDDIR
+
+      - name: Build
+        run: cmake --build $BUILDDIR
+    #
+    # - name: Test
+    #   run: ctest --test-dir $BUILDDIR
diff --git a/README.md b/README.md
index dad92b7..b8f6bb4 100644
--- a/README.md
+++ b/README.md
@@ -27,7 +27,7 @@ File                 | Description
 > release. [^bk1WA]
 
 Build this plug-in using `g++` from the GNU Compiler Collection (GCC) version 8
-or newer. The plug-ins are compiled against this header file `spank.h` [02].
+or newer. The plug-ins are compiled against the header file `<slurm/spank.h>`.
 Fedora distributes this file in the `slurm-devel` RPM package [^DoUiD]. CMake is
 available via the `cmake` package.
 
@@ -35,7 +35,7 @@ available via the `cmake` package.
 cmake -S . -B build # configure the project and choose a build dir
 cmake --build build # build the Singularity SPANK plug-in
 sudo cmake --install build # install the binary and configuration files
-# on older CMake: cmake --build build --target install
+# on older CMake: sudo cmake --build build --target install
 ```
 
 By default the plug-in `singularity-exec.so` is installed to `/usr/lib64/slurm`.
@@ -156,6 +156,26 @@ sudo cmake --install build # install the binary and configuration files
 sudo systemctl enable --now munge slurmctld slurmd
 ```
 
+## License
+
+```
+Copyright © 2020-2024 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH
+                      Matthias Kretz <m.kretz@gsi.de>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+```
+
 ## References
 
 [^bk1WA]: SPANK - Slurm Plug-in Architecture
@@ -176,7 +196,7 @@ sudo systemctl enable --now munge slurmctld slurmd
 [^DoUiD]: Fedora Slurm RPM Package
 <https://src.fedoraproject.org/rpms/slurm>
 
-[99]: singularity-exec.conf
+[99]: singularity-exec.conf.in
 [98]: slurm-singularity-wrapper.sh
 [97]: containers.sh
 [96]: Vagrantfile
diff --git a/main.cpp b/main.cpp
index 0e77888..4b5afb4 100644
--- a/main.cpp
+++ b/main.cpp
@@ -1,6 +1,6 @@
 /*{{{
-    Copyright © 2020 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH
-                     Matthias Kretz <m.kretz@gsi.de>
+    Copyright © 2020-2024 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH
+                          Matthias Kretz <m.kretz@gsi.de>
 
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by