Create directory for Spack user scope configuration

Author: wdconinc

containers/debian/Dockerfile

@@ -231,6 +231,7 @@ target=${target[${TARGETPLATFORM}]}
 spack config --scope site add "packages:all:require:[target=${target}]"
 spack config --scope site add "packages:all:target:[${target}]"
 spack config blame packages
+mkdir -p $HOME/.spack/
 spack config --scope user add "config:suppress_gpg_warnings:true"
 spack config --scope user add "config:build_jobs:${jobs}"
 spack config --scope user add "config:db_lock_timeout:${jobs}00"
@@ -272,4 +273,4 @@ set -e
 git clone --filter=tree:0 https://github.com/${EICSPACK_ORGREPO}.git ${EICSPACK_ROOT}
 git -C ${EICSPACK_ROOT} checkout ${EICSPACK_VERSION}
 spack repo add --scope site "${EICSPACK_ROOT}"
-EOF
+EOF