Make image portable insted of targeting hashwell

docker/Dockerfile

@@ -56,9 +56,9 @@ RUN mkdir -p /usr/local/share/casacore/data && \
     tar -C /usr/local/share/casacore/data -xzf -
 
 # Build dependencies with CMake
-# Targeting haswell for better x64 performance. Use PORTABLE=TRUE if you want to target non-x64 CPU architectures
-# ARG PORTABLE=TRUE
-ARG TARGET_CPU=haswell
+# Target haswell for better x64 performance. Use PORTABLE=TRUE if you want to target a broader range of CPU architectures
+ARG PORTABLE=TRUE
+# ARG TARGET_CPU=haswell
 
 # Casacore
 ARG CASACORE_COMMIT=master

docker/docker_build.sh

@@ -26,4 +26,3 @@ docker build \
   --tag ${IMAGE_NAME}:latest \
   .
 
-  echo "Succesfully build docker file"