Docker config for local dev environment doesn't properly set up XSpec

[aj-stein-nist]

Describe the bug

When using the local Docker environment based on the build/Dockerfile and build/docker-compose.yml specs, XSpec unit testing framework is installed, but recent updates to the dependency tree for Saxon 11.x and beyond require the classpath to be more precisely configured for the XSpec wrapper script to execute correctly. If not, all attempts to use XSpec on the CLI will fail.

Who is the bug affecting

NIST and community OSCAL developers, specifically those working on evaluating current state of tests as part of spike work to plan next steps for #1735.

What is affected by this bug

CI/CD

How do we replicate this issue

1. Checkout out the develop branch.
2. Go to the build directory with pushd build
3. Build the container and init a docker compose environment: docker compose up -d
4. Exec into the container docker compose exec cli /bin/bash
5. Run any XSpec test and observe a similar stack trace:

root@5a871d563df2:/oscal/src/specifications/profile-resolution# /oscal/build/metaschema/support/xspec/bin/xspec.sh example-set.xspec                                            
Creating Test Stylesheet...
Type error at char 5 in expression in xsl:sequence/@select on line 33 column 45 of uri-utils.xsl:
  XPTY0004  An empty sequence is not allowed as the first argument of x:resolve-xml-uri-with-catalog()
at function x:document-actual-uri on line 26 column 60 of uri-utils.xsl:
     invoked by function call at file:/oscal/build/metaschema/support/xspec/src/compiler/base/resolve-import/gather/gather-specs.xsl#36
  In template rule with match="element(Q{http://www.jenitennison.com/xslt/xspec}description)" on line 32 of gather-specs.xsl
     invoked by xsl:apply-templates at file:/oscal/build/metaschema/support/xspec/src/compiler/base/resolve-import/resolve-import.xsl#21
at function x:resolve-import on line 13 column 55 of resolve-import.xsl:
     invoked by unknown caller (class net.sf.saxon.value.MemoClosure)
at function x:resolve-import on line 13 column 55 of resolve-import.xsl:
     invoked by function call at file:/oscal/build/metaschema/support/xspec/src/compiler/base/main.xsl#86
  In template rule with match="/" on line 82 of main.xsl
An empty sequence is not allowed as the first argument of x:resolve-xml-uri-with-catalog()

*** Error compiling the test suit

Expected behavior (i.e. solution)

The tests run with the correct Saxon XSLT processor configuration with a preconfigured classpath.

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