Add minimal nextflow example

nextflow/README.md

+# A minimal nextflow example that uses podman on the bcf slurm cluster.
+
+## Assumptions
+
+* You work from `cli`
+* You have the system proxy variables set in your current terminal session
+
+## Run
+
+```
+nextflow run main.nf
+```
+
+If you observe errors, please notify us with a detailed error report, so that
+we can improve the configuration over time. This example won't cover all use-
+cases at the moment, so it may happen that your workflow won't run with the
+provided configuration. In that case contact us, so that we can try to find 
+solutions for your specific problem and integrate these into this example.
+
+## Notes
+
+Feel free to use the provided `nextflow.config` as a starter for your own
+workflows.

nextflow/main.nf

+process Hello {
+
+  output:
+  path("hi.txt")
+
+  script:
+  """
+  echo "Hoho" > hi.txt
+  """
+}
+
+
+workflow {
+
+  Hello()
+}

nextflow/nextflow.config

+process {
+  container='ubuntu:24.10'
+  executor='slurm'
+  clusterOptions="--export=http_proxy,https_proxy,ftp_proxy"
+  queue='bcf'
+}
+podman {
+  enabled=true
+}
+