Fix: cds command executed outside the root of application cause undefined error

[zongqichen]

I want to output ord document as static file and validate it in github action workflow:

    steps:
      - name: Set up Node.js
        uses: actions/setup-node@v4
        with:
          node-version: "18"

      - name: Install dependencies and prepare documents
        run: |
          npm install -g @sap/cds-dk
          npm install @sap/cds
          npm install https://github.com/cap-js/ord#fix_undefined
          cds compile ./ariba/srv --to ord -o ./tmp_documents/ariba.json
          cds compile ./cloud/srv --to ord -o ./tmp_documents/cloud.json
          cds compile ./erp/srv --to ord -o ./tmp_documents/erp.json

I create a debug branch and add two logger info, which prints out package name value.
The error shows:

packageName: undefined
[ord-plugin] - logger packageName undefined
TypeError: Cannot read properties of undefined (reading 'replace')
    at initializeAppConfig (/opt/actions-runner/_work/oid-cap-reference-app/oid-cap-reference-app/node_modules/@cap-js/ord/lib/ord.js:26:38)
    at module.exports (/opt/actions-runner/_work/oid-cap-reference-app/oid-cap-reference-app/node_modules/@cap-js/ord/lib/ord.js:151:23)
    at /opt/actions-runner/_work/_tool/node/18.20.3/x64/lib/node_modules/@sap/cds-dk/bin/compile/index.js:315:36
    at Generator.next (<anonymous>)
    at _write (/opt/actions-runner/_work/_tool/node/18.20.3/x64/lib/node_modules/@sap/cds-dk/lib/util/write.js:65:[28](https://github.tools.sap/CPA/oid-cap-reference-app/actions/runs/8966939/job/36012553?pr=49#step:6:29))
    at Object.to (/opt/actions-runner/_work/_tool/node/18.20.3/x64/lib/node_modules/@sap/cds-dk/lib/util/write.js:40:42)
    at /opt/actions-runner/_work/_tool/node/18.20.3/x64/lib/node_modules/@sap/cds-dk/lib/util/write.js:53:49
    at async Object.exec (/opt/actions-runner/_work/_tool/node/18.20.3/x64/lib/node_modules/@sap/cds-dk/bin/cds.js:91:16)
Error: Process completed with exit code 1.

Diagnose:

I think the problem is how do we define the packageJsonPath. The current implementation is:

    let packagejsonPath = path.join(cds.root, 'package.json')

which we use cds.root as base path. However, when we want to use cds command line to output ord static file, the cds command could be executed in anywhere.

Propose:

We need to stick to the path where srv folder is.