Add GCC-10 installation for C++20 support

Author: zoptiks

.github/workflows/biogears-complete-pipeline.yml

@@ -106,6 +106,14 @@ jobs:
             echo "RUN mkdir -p /opt/biogears/core/build/projects/biogears/generated/Release/c_encoded/8.0.0/biogears/io/xsd/cdm" >> docker/modified/Dockerfile.builder
             echo "RUN chmod -R 777 /opt/biogears/core/build" >> docker/modified/Dockerfile.builder
             
+            # Add newer compiler support for C++20
+            echo "# Install newer compiler with C++20 support" >> docker/modified/Dockerfile.builder
+            echo "RUN apt-get update && apt-get install -y software-properties-common" >> docker/modified/Dockerfile.builder
+            echo "RUN add-apt-repository ppa:ubuntu-toolchain-r/test -y" >> docker/modified/Dockerfile.builder
+            echo "RUN apt-get update && apt-get install -y gcc-10 g++-10" >> docker/modified/Dockerfile.builder
+            echo "RUN update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-10 100 --slave /usr/bin/g++ g++ /usr/bin/g++-10" >> docker/modified/Dockerfile.builder
+            echo "RUN gcc --version && g++ --version" >> docker/modified/Dockerfile.builder
+            
             # Add debugging commands to verify directory permissions
             echo "RUN ls -la /opt/biogears/core/build/projects/biogears/generated/Release/biogears/schema/cdm || echo 'Directory does not exist yet'" >> docker/modified/Dockerfile.builder
             echo "RUN ls -la /opt/biogears/core/build/projects/biogears/generated/Release/biogears/schema/biogears || echo 'Directory does not exist yet'" >> docker/modified/Dockerfile.builder