[ci] Change conda install location (#1855)
[ci] Change conda install location (#1855)

* Update Dockerfile

* Update Dockerfile

* chmod conda folder

microsoft/LightGBM,microsoft/LightGBM,henry0312/LightGBM,microsoft/LightGBM,henry0312/LightGBM,microsoft/LightGBM,henry0312/LightGBM,microsoft/LightGBM,henry0312/LightGBM,henry0312/LightGBM