Pipeline web application via Docker: Unable to communicate with the Pipeline 2 Engine.

[tigexplorer]

Hi,
I' ve installed both, pipeline and the webui like this:

docker pull daisyorg/pipeline

docker pull daisyorg/pipeline-webui

Starting it with

docker run --detach \
           -p 8181:8181 \
           -e PIPELINE2_WS_HOST=0.0.0.0 \
           daisyorg/pipeline

and

docker run --detach \
           -p 9000:9000 \
           daisyorg/pipeline-webui

If I try http://localhost:9000

I can add a user/ admin but get this error:

Unable to communicate with the Pipeline 2 Engine.

Something unexpected occured while communicating with the Pipeline 2 framework

See:
daisy.log

I'm on ubuntu 24.

[bertfrees]

The reason for this error is that the web UI, running in the second container, can not "see" the server running in the first container. To fix this, do the following (note the --name and --link arguments, and the DAISY_PIPELINE2_URL environment variable):

docker run --detach \
           --name pipeline \
           -e PIPELINE2_WS_HOST=0.0.0.0 \
           daisyorg/pipeline

docker run --detach \
           --link pipeline \
           -p 9000:9000 \
           -e DAISY_PIPELINE2_URL=http://pipeline:8181/ws \
           daisyorg/pipeline-webui:v2.7.1

Then, you can go to Administrator settings > Pipeline 2 Web API, and fill out the authentication details.

For this to work, you should use the tag "v2.7.1", because unfortunately "latest" is not pointing to the latest version. An authentication bug was fixed in version 2.7.1.

The alternative is to disable authentication on the server. This can be done by passing an environment variable:

docker run --detach \
           --name pipeline \
           -e PIPELINE2_WS_HOST=0.0.0.0 \
           -e PIPELINE2_WS_AUTHENTICATION=false \
           daisyorg/pipeline

[tigexplorer]

OK, thank you, that seems to work.

But if I try to validate old, previously successfully validated DTBs, I get always this Error with the pipeline and webui running via docker:

An empty sequence is not allowed as the value of variable $fragment (Please see detailed log for more info.)
See also: #877

The Docker containers are:

docker ps -a
CONTAINER ID   IMAGE                            COMMAND                  CREATED         STATUS         PORTS                                                   NAMES
b0834d6caf45   daisyorg/pipeline-webui:v2.7.1   "/opt/daisy-pipeline…"   7 minutes ago   Up 7 minutes   0.0.0.0:9000->9000/tcp, [::]:9000->9000/tcp, 9443/tcp   clever_kapitsa
764670db82fc   daisyorg/pipeline                "/opt/daisy-pipeline…"   9 minutes ago   Up 9 minutes   8181/tcp                                                pipeline

I will mark your answer.

But unfortunately, the main problem, that I'm not able to get DTB 2.02. validating running on ubuntu 24 remains. Neither with normal or Docker installed pipeline.