Missing usage of the common OS_CA_CERT_SOURCE_PATH variable in Dockerfiles

[rasmunk]

docker-migrid/Dockerfile.rocky9

Line 1461 in 4f6e79b

&& cp ${CERT_DIR}/combined.pem /etc/pki/ca-trust/source/anchors/ \

This should instead use the common $OS_CA_CERT_SOURCE_PATH Dockerfile argument that already specifies this common path across each Dockerfile and is already currently being used to add the external-certificates before the OS ca trust is updated.

docker-migrid/Dockerfile.rocky9

Line 729 in 4f6e79b

COPY external-certificates/ $OS_CA_CERT_SOURCE_PATH/

[rasmunk]

Solved by merging #109