7aff69fbe0
Docker integration tests are already covered by the integration-docker job on ubuntu-latest. On the KVM runner the Firecracker TAP/nftables pool conflicts with Docker networking, causing those tests to hang and the coverage job to never complete. Add SKIP_DOCKER_TESTS env-var support to docker_available() and set it for the integration phase of coverage.sh so only Firecracker integration tests run there.