[BEAM-4742] Allow custom docker-image in portable wordcount example

• Type: Improvement
• Status: Resolved
• Priority: P3
• Resolution: Not A Problem
• Affects Version/s: 2.5.0
• Fix Version/s: 2.5.0
• Component/s: examples-python
• Assignee: Ryan Williams
• Reporter: Ryan Williams
• Created: 09/Jul/18 15:41
• Updated: 16/May/20 13:23
• Resolved: 09/Jul/18 19:49

Description

I hit a couple snags running the portable wordcount example:

• the default docker image is hard-coded to a bintray URL, but I published my image to Docker Hub I missed that there's already a pipeline option for this! Thanks lcwik
• the default output path is in a temporary directory that doesn't exist at the time of the open call, so I got IOError: [Errno 2] No such file or directory 

I'll send a PR with fixes to each of these shortly.

I've also not found where to observe output from successfully running the example.

Issue Links

• links to: GitHub Pull Request #5902
• links to: GitHub Pull Request #5903