replace variables on run instead of on build
replace variables on run instead of on build

learning-layers/Layers-Dockerfiles,Gordin/Layers-Dockerfiles,Gordin/Layers-Dockerfiles,learning-layers/Layers-Dockerfiles,learning-layers/Layers-Dockerfiles,learning-layers/Layers-Dockerfiles,Gordin/Layers-Dockerfiles,Gordin/Layers-Dockerfiles,learning-layers/Layers-Dockerfiles,Gordin/Layers-Dockerfiles