Spinning SQL Server 2019 up with docker-compose

docker-compose.yaml

version: '3.7'
 
services:
    sqlserver1:
        build: 
          context: .
          dockerfile: dockerfile
        ports:  
          - "15789:1433"
        env_file:
          - sqlserver.env
        volumes: 
          - sqlsystem:/var/opt/mssql/
          - sqldata:/var/opt/sqlserver/data
          - sqllog:/var/opt/sqlserver/log
          - sqlbackup: /var/opt/sqlserver/backup
volumes:
  sqlsystem:
  sqldata:
  sqllog:
  sqlbackup:

dockerfile

FROM mcr.microsoft.com/mssql/server:2019-GDR1-ubuntu-16.04

USER root

RUN mkdir /var/opt/sqlserver
RUN mkdir /var/opt/sqlserver/data
RUN mkdir /var/opt/sqlserver/log
RUN mkdir /var/opt/sqlserver/backup

RUN chown -R mssql /var/opt/sqlserver

USER mssql

CMD /opt/mssql/bin/sqlservr

sqlserver.env

SA_PASSWORD=Testing1122
ACCEPT_EULA=Y
MSSQL_DATA_DIR=/var/opt/sqlserver/data
MSSQL_LOG_DIR=/var/opt/sqlserver/log
MSSQL_BACKUP_DIR=/var/opt/sqlserver/backup