Dockerfile: FROM testing-20211220-slim with gcc-11 and spack v0.17.1

.gitlab-ci.yml

containers/debian/Dockerfile

containers/jug/dev.Dockerfile

spack.yaml

spack/packages/acts/acts-822.patch

spack/packages/acts/package.py

spack/packages/dd4hep/cmake_language.patch

spack/packages/dd4hep/package.py

spack/packages/dd4hep/tbb-workarounds.patch

spack/packages/dd4hep/tbb2.patch

spack/packages/madx/README.md

spack/packages/madx/package.py

spack/packages/qt/gcc10.patch

spack/packages/qt/package.py

spack/packages/qt/qt3-accept.patch

spack/packages/qt/qt3-headers.patch

spack/packages/qt/qt4-87-configure-gcc.patch

spack/packages/qt/qt4-asm-volatile.patch

spack/packages/qt/qt4-configure-gcc.patch

spack/packages/qt/qt4-mac.patch