CI CD with GitLab (.gitlab-ci.yml)

stages:
    - Build_and_Deploy

Build_and_Deploy:
  stage: Build_and_Deploy
  image: node:10.18.0
  only:
    - master
  tags:
    - gitlab-org
  script:
    - echo CI Started
    - npm i -g gulp
    - npm install -g @pnp/office365-cli
    - npm i
    - gulp bundle --ship
    - gulp package-solution --ship
    - o365 login -t password -u uname -p pswd

    - o365 spo app add -p ./sharepoint/solution/appname.sppkg --overwrite

    - o365 spo app deploy --name appname.sppkg --appCatalogUrl https://testaccount.sharepoint.com/sites/appcatalog/ --skipFeatureDeployment  
  allow_failure: false

SP Online - Handling external sharing using power shell

//Get all site collection
$SiteColl = Get-SPOSite  -Limit ALL

//Disable external sharing for all the site/site collection in the tenant
foreach($Site in $SiteColl)
{
    Write-host $Site.Url
    Set-SPOSite -Identity $Site.Url -SharingCapability Disabled
}


//Disable external sharing
Set-SPOSite -Identity "https://xxxx.sharepoint.com/sites/xxx" -SharingCapability Disabled

//To get Detailed list of sp site
Get-SPOSite -Identity "https://xxxx/sites/xxx" -detailed |fl