chore(images/builder): remove useless source directive

The source directory works only for the current shell, and `gcc-9`
is never used in that RUN step after activation, so remove the
directive.

Signed-off-by: Leonardo Di Giovanna <[email protected]>
Co-Authored-By: irozzo-1A <[email protected]>

Author: 2 people

images/builder/Dockerfile

@@ -37,9 +37,9 @@ RUN yum install -y \
 		systemd \
 		tar \
 	    wget \
-        sed && \
-    yum -y install devtoolset-9-gcc devtoolset-9-gcc-c++ && \
-	source /opt/rh/devtoolset-9/enable
+        sed \
+        devtoolset-9-gcc \
+        devtoolset-9-gcc-c++
 
 ARG CMAKE_VERSION=3.24.4
 RUN	curl -L -o /tmp/cmake.tar.gz https://github.com/Kitware/CMake/releases/download/v${CMAKE_VERSION}/cmake-${CMAKE_VERSION}-linux-$(uname -m).tar.gz && \