.NET TestContainers does not indicate container creation

Question

So I have a simple xunit integration test using TestContainers nuget package of version 2.3.0 to run Sql server in docker container.

The test looks like this:

[Fact]
public async Task TestDatabaseConnection()
{
    var container = new TestcontainersBuilder<MsSqlTestcontainer>()
        .WithDatabase(new MsSqlTestcontainerConfiguration
        {
            Password = "password",
        })
        .Build();
    await container.StartAsync();

    using var connection = new SqlConnection(container.ConnectionString);
    connection.Open();
    connection.State.Should().Be(System.Data.ConnectionState.Open);
}

But in container.StartAsync(); method I'm getting following DockerAPIException:

Docker.DotNet.DockerApiException: Docker API responded with status code=Conflict, response={"message":"Container 7b487d4475ece5c37e24f553a2f9d9c133a37636025b8731b22dea5022c628ca is not running"} .

Have you guys have any guess how to fix this?

Btw. In Docker Desktop I can see the container with the exact same Id as in Exception has been created, and at the end of the test removed.

Answer 1

Allright my bad. Password requirements was the problem:

/*
 * username is always `sa`
 * password will be used for the `sa` user
 *  - at least 8 characters in length
 *  - has at least 3 out of 4 categories of
 *    - has upper case alphabet
 *    - has lower case alphabet
 *    - has digit
 *    - has non-alphanumeric character
 * container does not allow automatic creation of an initial database
 * 
 * default image is mcr.microsoft.com/mssql/server:2017-latest-ubuntu 
 */

see documentation