fix: docker error on monitoring multiple projects

[joeholdcroft]

What does this PR do?

Fixes an error thrown by jq when using our Docker images to monitor multiple projects (i.e. using --all-projects.

The error thrown by jq is:

jq: error (at <stdin>:737): Cannot index array with string "uri"

How should this be manually tested?

• Pull down branch
• Build local docker image (cd docker && docker build -f Dockerfile.docker . -t snyk/snyk-cli:local
• Monitor a single project via this docker image
  • docker run --rm -e 'SNYK_TOKEN=***-**-**' -e 'MONITOR=true' -v <full-path-to-repo>:/project snyk/snyk-cli:local test -d
• Monitor a multi project directory via this docker image
  • docker run --rm -e 'SNYK_TOKEN=***-**-**' -e 'MONITOR=true' -v <full-path-to-repo>:/project snyk/snyk-cli:local test --all-projects '--detection-depth=3' -d
• Confirm that no errors occur and the HTML file for both single and multi projects includes link(s) to view the project on Snyk at the top

Any background context you want to provide?

This error occurs because the following line expects the results JSON to be an object with uri key, but in the case of multiple projects it's an array of objects with uri keys:

https://github.com/snyk/snyk/blob/d282b35e62874350f818a0bd6726e5994c3be700/docker/docker-entrypoint.sh#L106

Screenshots

[snyksec]

🎉 This PR is included in version 1.316.2 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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