Update azure-pipelines.yml for Azure Pipelines

azure-pipelines.yml

@@ -9,13 +9,13 @@ variables:
 pool:
   vmImage: 'ubuntu-latest'
 
-container: rocker/r-base:latest
+container: rocker/rstudio:latest
 
 steps:
 - script: |
     echo 'options(repos = "https://cloud.r-project.org")' > ~/.Rprofile
+    echo ${R_LIBS_USER}
     mkdir -p ${R_LIBS_USER}
-    sudo apt-get update && sudo apt-get install -y libxml2-dev libssl-dev git-core
   displayName: 'Setup R library directory'
 - bash: 'git push --prune https://$(ghPat)@github.com/cloudyr/AzureVMmetadata +refs/remotes/origin/*:refs/heads/* +refs/tags/*:refs/tags/*'
   displayName: 'Copying to cloudyr'