Login failed for user 'sa' in ms sql linux container

I am using windows laptop and installed docker desktop and created a docker compose file and I am able to run it succesfully and it creates the images but when i try to connect to that sql server using my laptops ssms it is not allowing me to do so and giving error 'login failed for user 'sa'

Here is my docker-compose.yml

version: "1.0"
services:
    sqlserver:
        # load the sql server image from microsoft registry
        image: mcr.microsoft.com/mssql/server:2017-latest
        environment: 
          - SA_PASSWORD=Password@1
          - ACCEPT_EULA=Y
        ports:
          - "1433:1433"
        volumes:
            # copy the sql scripts to container
          - ..\..\SQL Scripts\Initial Creation Script.sql:/var/scripts/Initial Creation Script.sql
        command:
          - /bin/bash
          - -c 
          - |
            # Launch MSSQL and send to background
            /opt/mssql/bin/sqlservr &
            sleep 30
            /opt/mssql-tools/bin/sqlcmd -U sa -P $$SA_PASSWORD -l 30 -e -i '/var/scripts/Initial Creation Script.sql'       #<== here I am just creating a db and some tables in it
            #done
            # So that the container doesn't shut down, sleep this thread
            sleep infinity

when i go to terminal of this container in docker desktop I am able to login using 'sa' with the same password using sqlcmd utility and I see that it has created my DB and tables as well

see below screenshot

I am not sure what is wrong with this. this was working in my old laptop and now I got a new laptop and everything is broken, obviusly this is not the reason

some facts:
In this laptop I already have a 'sa' user (on localhost) with different password, is that hampering this?!! , if yes how can i create a special user for my docker image only with sys access for my database fithub, may be something like FithubDBUser with some custom password, can i do it in docker compose file?

thank you

I was able to get the answer from the comments, thanks to all the commentors, I already had localhost listening on my local laptop on 1433, and that instance also had sa user (with different password), so it was not getting connected, when I changed my docker-compose.yml file to map it to a different port it worked.

Here is the edited docker-compose.yml

version: "1.0"
services:
    sqlserver:
        # load the sql server image from microsoft registry
        image: mcr.microsoft.com/mssql/server:2017-latest
        environment: 
          - SA_PASSWORD=Password@1
          - ACCEPT_EULA=Y
        ports:
          - "1434:1433"

I will mark this question as answered. Somehow another question is popping up in my head,

> how can we gauge what ports will be in use on host machine, it might
> happen 1434 is also getting used? but I will do some research and if
> needed will post here