**Describe the bug** BioContainer STDOut is not attached to FSI, only gets returned when container tasks are finished/aborted. This leads to no output until the containerized process is completely finished. **To Reproduce** Here is an example where i wanted to see the progress of a fasterq-dump task in SRATools: ``` open SRATools let sraImage = Docker.ImageId "quay.io/biocontainers/sra-tools:2.10.3--pl526haddd2b5_0" let sraContext = BioContainer.initBcContextWithMountAsync client sraImage @"C:\Users\kevin\Downloads\CsbScaffold-master\MetaIndexing_New\data" |> Async.RunSynchronously let FQDOptions = [ FasterQDumpParams.OutDirectory @"C:\Users\kevin\Downloads\CsbScaffold-master\MetaIndexing_New\data\Testerino" FasterQDumpParams.TempDirectory @"C:\Users\kevin\Downloads\CsbScaffold-master\MetaIndexing_New\data\Testerino\tmp" FasterQDumpParams.Split SplitOptions.SplitFiles FasterQDumpParams.PrintDetails FasterQDumpParams.ShowProgress ] runFasterQDumpOfAccession sraContext FQDOptions "SRR000001" ``` Output in FSI only gets printed after the whole task is finished: **Expected behavior** STDOut of the container should appear in FSI as produced during the task to see how it should work, take a look at the output using docker cli: ``` docker run -it -v C:/Users/kevin/Downloads/CsbScaffold-master/MetaIndexing_New/data:/data f9876632ae1e / # cd data /data # fasterq-dump -O ./Testerino -t ./Testerino/tmp --split-files -x -p SRR000001 ``` **OS and framework information (please complete the following information):** - OS: Windows 10 - OS Version 1909 - .Net core SDK version 3.1.102 - Docker Desktop Community 2.2.0.4 (43472) stable