/// <summary>
/// Run a container. Does NOT pull the container - the assumption is that
/// the container already exists..
/// </summary>
/// <param name="image"></param>
/// <param name="entrypoint"></param>
/// <param name="args"></param>
/// <param name="volumes"></param>
/// <param name="environment"></param>
/// <param name="workingDir"></param>
/// <param name="cancelToken"></param>
/// <returns></returns>
public async Task RunContainerAsync(string image, string entrypoint, IEnumerable <string> args, IReadOnlyList <Volume> volumes, Dictionary <string, string> environment, string workingDir, CancellationToken cancelToken)
{
CreateContainerParameters parameters = new CreateContainerParameters()
{
Image = image,
Entrypoint = entrypoint.ToEnumerable().AppendMany(args).ToList(),
Env = environment?.Select((x, y) => $"{x}={y}")?.ToList(),
Tty = false,
HostConfig = new HostConfig()
{
Binds = volumes.Select(v => $"{v.SourcePath}:{v.DestinationPath}").ToList()
},
WorkingDir = workingDir
};
// Create the container.
CreateContainerResponse container = await client.Containers.CreateContainerAsync(parameters, cancelToken);
try
{
// Report any warnings from the docker daemon.
foreach (string warning in container.Warnings)
{
warningHandler(warning);
}
// Start the container, and wait for it to exit.
await client.Containers.StartContainerAsync(container.ID, new ContainerStartParameters(), cancelToken);
// Watch stdout and/or stderr as necessary.
Task stdoutListener = WatchStdoutStreamAsync(container.ID, cancelToken);
Task stderrListener = WatchStderrStreamAsync(container.ID, cancelToken);
// Wait for the container to exit.
ContainerWaitResponse waitResponse = await client.Containers.WaitContainerAsync(container.ID, cancelToken);
// Wait for output listeners if cancellation has not been requested.
if (!cancelToken.IsCancellationRequested)
{
await stdoutListener.ConfigureAwait(false);
await stderrListener.ConfigureAwait(false);
}
// If cancellation isn't requested, ensure the container exited gracefully.
if (!cancelToken.IsCancellationRequested && waitResponse.StatusCode != 0)
{
(string stdout, string stderr) = await GetContainerLogsAsync(container.ID, parameters.Tty, cancelToken);
StringBuilder output = new StringBuilder();
output.AppendLine(stdout);
output.AppendLine(stderr);
throw new Exception($"Container exited with non-zero exit code. Container log:\n{output}");
}
}
finally
{
ContainerRemoveParameters removeParameters = new ContainerRemoveParameters()
{
RemoveVolumes = true,
Force = true
};
ContainerKillParameters killParameters = new ContainerKillParameters()
{
};
// Only attempt to kill the container if it's still running.
if (await IsRunning(container.ID))
{
await client.Containers.KillContainerAsync(container.ID, killParameters);
}
await client.Containers.RemoveContainerAsync(container.ID, removeParameters);
}
}
public async Task WaitOnServerExit(string containerId)
{
ContainerWaitResponse containerWaitResponse = await _dockerClient.Containers.WaitContainerAsync(containerId).ConfigureAwait(false);
_logger.LogInformation($"Container {containerId} exited with exit code {containerWaitResponse.StatusCode}.");
}