If you aren't hitting it hard (hosting more than a few connections) you won't notice much limiting to 1GB RAM... I run a couple projects with MS-SQL docker containers and 1GB limit...

    docker run -m 1GB --restart unless-stopped --name sql -h sql -e "ACCEPT_EULA=Y" -e "MSSQL_SA_PASSWORD=Let-Me-In" -p 1433:1433 -d microsoft/mssql-server-linux:2017-latest

I tend to change the name and port mapping as necessary depending on use, but that's the quickest way to get a server up for MS-SQL... can use SQL Server Management Studio (windows) or Azure Data Studio [1][ (electron, formerly SQL Operations Studio) which is cross platform[2].

[1] https://github.com/Microsoft/azuredatastudio [2] https://github.com/Microsoft/azuredatastudio/releases