Incremental urunc v0.4.0 release

What's Changed

New features

• Introduce support for seccomp in VMMs
• Support of block images inside urunc's container image
• Support of configurable memory using memory limit from container's spec
• Support for docker

Internals

• network cleanup: delete TC rules and TAP device upon killing the unikernel
• Enhance unikernel interface with functions to check supporting features:
  • Init() initializes the unikernel struct based on the unikernel arguments
  • SupportsBlock() returns a bool value, based on the block support of the respective unikernel.
  • SupportsFS() takes as an argument a filesystem type and checks if the unikernel supports that type.
• Partial unit tests for pkg/unikontainers
• Refactor devmapper snapshot handling
• Define new environment variable USE_DEVMAPPER_AS_BLOCKto use devmapper's snapshot as a block image for the unikernel
• Handle newer versions of Unikraft unikernels
• Enable NAT and IP forwarding in static networking

Annotations

• com.urunc.unikernel.block: Define the path to the block image for the unikernel inside the container image
• com.urunc.unikernel.blkMntPoint: Define the mountpoint of the block image for the unikernel
• com.urunc.unikernel.unikernelVersion: Specify the version of unikernel

Building and CI/CD

• Add action for unit testing
• Refactor Makefile and enhance its targets
• Restructure CI jobs and transition to ARC runners

Misc

• Bug fixes
• Refactor handling of normal containers and replaces constants in paths and annotations
• Unikraft FC boot on arm64
• Huge refactor and update of urunc's documentation. The documentation is available at https://nubificus.github.io/urunc/

Full Changelog: v0.3.0...v0.4.0