PRQL Dockerfile works again

The PRQL project provides a simple, powerful, pipelined SQL replacement. To make it easier to share the development environment, there is a Dev Container that bundles the dozens of components into a single container. This makes it easier for new person to start using the project: they don’t have to collect the proper (sometimes conflicting) versions of the tools on their computer.

The Dev Container had been working fine for over a year. I recently noticed that there was a new version of Docker Desktop (old: 4.29.0; new: 4.30.0). After the upgrade, some of the services – the Playground and the “Book” (the documentation) – were not available from the Dev Container.

The fix was to force those services to bind to the address (not “localhost”, not in the task file that configures them. See the PRQL repo for details.

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