add docker to duplicate reported issue ampas#146

.github/workflows/docker_linuxes.yml

@@ -84,6 +84,19 @@ jobs:
     - name: Run ctlrender within the Docker image
       run: docker run ctl:latest sh -c "ctlrender -ctl /usr/src/aces-dev/transforms/ctl/utilities/ACESutil.Unity.ctl /usr/src/aces-dev/images/ACES/SonyF35.StillLife.exr /tmp/testout.exr"
 
+  ubuntu-22-04-LTO:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Build the Docker image
+      run: docker build --no-cache --rm -f ./docker/Dockerfile_ubuntu_22.04_LTO -t ctl:latest .
+
+    - name: Run ctlrender within the Docker image
+      run: docker run ctl:latest sh -c "ctlrender -ctl /usr/src/aces-dev/transforms/ctl/utilities/ACESutil.Unity.ctl /usr/src/aces-dev/images/ACES/SonyF35.StillLife.exr /tmp/testout.exr"
+
+
   ubuntu-23-10:
 
     runs-on: ubuntu-latest

docker/Dockerfile_ubuntu_22.04_LTO

@@ -0,0 +1,32 @@
+FROM ubuntu:22.04
+
+RUN apt-get update
+
+# disable interactive install 
+ENV DEBIAN_FRONTEND noninteractive
+
+# install developement tools
+RUN apt-get -y install cmake
+RUN apt-get -y install g++
+
+# install CTL dependencies
+RUN apt-get -y install libopenexr-dev
+RUN apt-get -y install libtiff-dev
+
+# build CTL
+WORKDIR /usr/src/CTL
+COPY . .
+WORKDIR /usr/src/CTL/build
+RUN rm -R *
+RUN cmake .. -DCMAKE_INTERPROCEDURAL_OPTIMIZATION=TRUE -DCMAKE_VERBOSE_MAKEFILE=on -DCMAKE_CXX_FLAGS="-Werror=odr -Werror=lto-type-mismatch -Werror=strict-aliasing"
+#RUN cmake .. -Werror=odr -Werror=lto-type-mismatch -Werror=strict-aliasing
+#RUN cmake ..
+#RUN make CXXFLAGS="-flto=4 -Werror=odr -Werror=lto-type-mismatch -Werror=strict-aliasing"
+#RUN make CXXFLAGS="-flto=4 -fno-fat-lto-objects"
+#RUN make CXXFLAGS="-Werror=odr -Werror=lto-type-mismatch -Werror=strict-aliasing"
+RUN make 
+RUN make install
+
+# finalize docker environment
+WORKDIR /usr/src/CTL
+