feat(library): Introduce WAMR 2.1 as library

library/wamr/2.1/Dockerfile

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+FROM ghcr.io/webassembly/wasi-sdk AS build
+
+WORKDIR /app
+COPY ./helloworld.c .
+RUN /opt/wasi-sdk/bin/clang -O3 -o helloworld.wasm helloworld.c
+
+FROM ubuntu:22.04 AS wamrc-build
+
+ARG WAMR_VERSION=2.1.2
+
+RUN set -xe; \
+    apt -yqq update; \
+    apt -yqq install wget \
+    ;
+
+WORKDIR /usr/local/bin
+RUN set -xe; \
+    wget https://github.com/bytecodealliance/wasm-micro-runtime/releases/download/WAMR-${WAMR_VERSION}/wamrc-${WAMR_VERSION}-x86_64-ubuntu-22.04.tar.gz; \
+    tar xf wamrc-${WAMR_VERSION}-x86_64-ubuntu-22.04.tar.gz \
+    ;
+
+WORKDIR /app
+COPY --from=build /app/helloworld.wasm .
+RUN /usr/local/bin/wamrc -o helloworld.aot helloworld.wasm
+
+FROM ubuntu:22.04 AS iwasm-down
+
+ARG WAMR_VERSION=2.1.2
+
+RUN set -xe; \
+    apt -yqq update; \
+    apt -yqq install wget \
+    ;
+
+WORKDIR /usr/local/bin
+RUN set -xe; \
+    wget https://github.com/bytecodealliance/wasm-micro-runtime/releases/download/WAMR-${WAMR_VERSION}/iwasm-${WAMR_VERSION}-x86_64-ubuntu-22.04.tar.gz; \
+    tar xf iwasm-${WAMR_VERSION}-x86_64-ubuntu-22.04.tar.gz \
+    ;
+
+FROM scratch
+
+# Copy iwasm binary.
+COPY --from=iwasm-down /usr/local/bin/iwasm /usr/bin/iwasm
+
+# Copy iwasm libraries.
+COPY --from=iwasm-down /lib/x86_64-linux-gnu/libm.so.6 /lib/x86_64-linux-gnu/libm.so.6
+COPY --from=iwasm-down /lib/x86_64-linux-gnu/libz.so.1 /lib/x86_64-linux-gnu/libz.so.1
+COPY --from=iwasm-down /lib/x86_64-linux-gnu/libzstd.so.1 /lib/x86_64-linux-gnu/libzstd.so.1
+COPY --from=iwasm-down /lib/x86_64-linux-gnu/libstdc++.so.6 /lib/x86_64-linux-gnu/libstdc++.so.6
+COPY --from=iwasm-down /lib/x86_64-linux-gnu/libgcc_s.so.1 /lib/x86_64-linux-gnu/libgcc_s.so.1
+COPY --from=iwasm-down /lib/x86_64-linux-gnu/libc.so.6 /lib/x86_64-linux-gnu/libc.so.6
+COPY --from=iwasm-down /lib64/ld-linux-x86-64.so.2 /lib64/ld-linux-x86-64.so.2
+
+# COPY AoT file.
+COPY --from=wamrc-build /app/helloworld.aot /app/helloworld.aot

library/wamr/2.1/Kraftfile

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+spec: v0.6
+
+name: wamr
+
+rootfs: ./Dockerfile
+
+cmd: ["/usr/bin/iwasm", "/app/helloworld.aot"]
+
+template:
+  source: https://github.com/unikraft/app-elfloader.git
+  version: staging
+
+unikraft:
+  source: https://github.com/unikraft/unikraft.git
+  version: staging
+  kconfig:
+    # Configurations options for app-elfloader
+    # (they can't be part of the template atm)
+    CONFIG_APPELFLOADER_ARCH_PRCTL: 'y'
+    CONFIG_APPELFLOADER_BRK: 'y'
+    CONFIG_APPELFLOADER_CUSTOMAPPNAME: 'y'
+    CONFIG_APPELFLOADER_STACK_NBPAGES: 128
+    CONFIG_APPELFLOADER_VFSEXEC_EXECBIT: 'n'
+    CONFIG_APPELFLOADER_VFSEXEC: 'y'
+    CONFIG_APPELFLOADER_HFS: 'y'
+    CONFIG_APPELFLOADER_HFS_ETCRESOLVCONF: 'y'
+    CONFIG_APPELFLOADER_HFS_ETCHOSTS: 'y'
+    CONFIG_APPELFLOADER_HFS_ETCHOSTNAME: 'y'
+    CONFIG_APPELFLOADER_HFS_REPLACEEXIST: 'y'
+    # Unikraft options
+    CONFIG_HAVE_PAGING_DIRECTMAP: 'y'
+    CONFIG_HAVE_PAGING: 'y'
+    CONFIG_I8042: 'y'
+    CONFIG_LIBDEVFS_AUTOMOUNT: 'y'
+    CONFIG_LIBDEVFS_DEV_NULL: 'y'
+    CONFIG_LIBDEVFS_DEV_STDOUT: 'y'
+    CONFIG_LIBDEVFS_DEV_ZERO: 'y'
+    CONFIG_LIBDEVFS: 'y'
+    CONFIG_LIBPOSIX_ENVIRON_ENVP0: "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
+    CONFIG_LIBPOSIX_ENVIRON_ENVP1: "LD_LIBRARY_PATH=/usr/local/lib:/usr/lib:/lib"
+    CONFIG_LIBPOSIX_ENVIRON_ENVP2: "HOME=/"
+    CONFIG_LIBPOSIX_ENVIRON: 'y'
+    CONFIG_LIBPOSIX_ENVIRON_LIBPARAM: 'y'
+    CONFIG_LIBPOSIX_ENVIRON_LIBPARAM_MAXCOUNT: '64'
+    CONFIG_LIBPOSIX_EVENTFD: 'y'
+    CONFIG_LIBPOSIX_FDIO: 'y'
+    CONFIG_LIBPOSIX_FDTAB: 'y'
+    CONFIG_LIBPOSIX_FUTEX: 'y'
+    CONFIG_LIBPOSIX_MMAP: 'y'
+    CONFIG_LIBPOSIX_NETLINK: 'y'
+    CONFIG_LIBPOSIX_PIPE: 'y'
+    CONFIG_LIBPOSIX_POLL: 'y'
+    CONFIG_LIBPOSIX_PROCESS_CLONE: 'y'
+    CONFIG_LIBPOSIX_SOCKET: 'y'
+    CONFIG_LIBPOSIX_SYSINFO: 'y'
+    CONFIG_LIBPOSIX_TIME: 'y'
+    CONFIG_LIBPOSIX_TIMERFD: 'y'
+    CONFIG_LIBPOSIX_UNIXSOCKET: 'y'
+    CONFIG_LIBPOSIX_USER_GID: 0
+    CONFIG_LIBPOSIX_USER_GROUPNAME: "root"
+    CONFIG_LIBPOSIX_USER_UID: 0
+    CONFIG_LIBPOSIX_USER_USERNAME: "root"
+    CONFIG_LIBPOSIX_USER: 'y'
+    CONFIG_LIBRAMFS: 'y'
+    CONFIG_LIBSYSCALL_SHIM_HANDLER_ULTLS: 'y'
+    CONFIG_LIBSYSCALL_SHIM_HANDLER: 'y'
+    CONFIG_LIBSYSCALL_SHIM_LEGACY_VERBOSE: 'y'
+    CONFIG_LIBSYSCALL_SHIM: 'y'
+    CONFIG_LIBUKALLOCPOOL: 'y'
+    CONFIG_LIBUKBLKDEV_MAXNBQUEUES: '1'
+    CONFIG_LIBUKBLKDEV_DISPATCHERTHREADS: 'y'
+    CONFIG_LIBUKBLKDEV_SYNC_IO_BLOCKED_WAITING: 'y'
+    CONFIG_LIBUKBLKDEV: 'y'
+    CONFIG_LIBUKBOOT_BANNER_MINIMAL: 'y'
+    CONFIG_LIBUKBOOT_HEAP_BASE: '0x400000000'
+    CONFIG_LIBUKBOOT_MAINTHREAD: 'y'
+    CONFIG_LIBUKBOOT_SHUTDOWNREQ_HANDLER: 'y'
+    CONFIG_LIBUKCPIO: 'y'
+    CONFIG_LIBUKDEBUG_CRASH_SCREEN: 'y'
+    CONFIG_LIBUKDEBUG_ENABLE_ASSERT: 'y'
+    CONFIG_LIBUKDEBUG_PRINT_SRCNAME: 'n'
+    CONFIG_LIBUKDEBUG_PRINT_TIME: 'y'
+    CONFIG_LIBUKDEBUG_PRINTK_ERR: 'y'
+    CONFIG_LIBUKDEBUG_PRINTK: 'y'
+    CONFIG_LIBUKDEBUG: 'y'
+    CONFIG_LIBUKFALLOC: 'y'
+    CONFIG_LIBUKMPI: 'n'
+    CONFIG_LIBUKSIGNAL: 'y'
+    CONFIG_LIBUKRANDOM_DEVFS: 'y'
+    CONFIG_LIBUKRANDOM: 'y'
+    CONFIG_LIBUKVMEM_DEFAULT_BASE: '0x0000001000000000'
+    CONFIG_LIBUKVMEM_DEMAND_PAGE_IN_SIZE: 12
+    CONFIG_LIBUKVMEM_PAGEFAULT_HANDLER_PRIO: 4
+    CONFIG_LIBUKVMEM: 'y'
+    CONFIG_LIBVFSCORE_AUTOMOUNT_CI: 'y'
+    CONFIG_LIBVFSCORE_AUTOMOUNT_CI_EINITRD: 'y'
+    CONFIG_LIBVFSCORE_AUTOMOUNT_UP: 'y'
+    CONFIG_LIBVFSCORE_AUTOMOUNT: 'y'
+    CONFIG_LIBVFSCORE_NONLARGEFILE: 'y'
+    CONFIG_LIBVFSCORE: 'y'
+    CONFIG_LIBUK9P: 'y'
+    CONFIG_OPTIMIZE_DEADELIM: 'y'
+    CONFIG_OPTIMIZE_LTO: 'y'
+    CONFIG_PAGING: 'y'
+    CONFIG_STACK_SIZE_PAGE_ORDER: 4 # 128 * 4K = 512K
+    CONFIG_UKPLAT_MEMREGION_MAX_COUNT: 64
+    CONFIG_LIBUKNETDEV_EINFO_LIBPARAM: 'y'
+
+    # Debug options
+    # CONFIG_LIBUKDEBUG_PRINTD: 'y'
+    # CONFIG_LIBUKDEBUG_PRINTK_INFO: 'y'
+    # CONFIG_LIBSYSCALL_SHIM_STRACE: 'y'
+    # CONFIG_LIBSYSCALL_SHIM_DEBUG: 'y'
+
+libraries:
+  lwip:
+    source: https://github.com/unikraft/lib-lwip.git
+    version: staging
+    kconfig:
+      CONFIG_LWIP_LOOPIF: 'y'
+      CONFIG_LWIP_UKNETDEV: 'y'
+      CONFIG_LWIP_LOOPBACK: 'y'
+      CONFIG_LWIP_TCP: 'y'
+      CONFIG_LWIP_UDP: 'y'
+      CONFIG_LWIP_RAW: 'y'
+      CONFIG_LWIP_WND_SCALE: 'y'
+      CONFIG_LWIP_TCP_KEEPALIVE: 'y'
+      CONFIG_LWIP_THREADS: 'y'
+      CONFIG_LWIP_HEAP: 'y'
+      CONFIG_LWIP_SOCKET: 'y'
+      CONFIG_LWIP_AUTOIFACE: 'y'
+      CONFIG_LWIP_IPV4: 'y'
+      CONFIG_LWIP_DHCP: 'y'
+      CONFIG_LWIP_DNS: 'y'
+      CONFIG_LWIP_NUM_TCPCON: 64
+      CONFIG_LWIP_NUM_TCPLISTENERS: 64
+      CONFIG_LWIP_ICMP: 'y'
+  libelf:
+    source: https://github.com/unikraft/lib-libelf.git
+    version: staging
+
+targets:
+- fc/x86_64
+- qemu/x86_64

library/wamr/2.1/README.md

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+# WARM
+
+This directory contains the [WAMR (WebAssembly Micro Runtime)](https://github.com/bytecodealliance/wasm-micro-runtime) runtime on Unikraft, in binary compatibility mode.
+It runs a "Hello, World!" web assembly program running on Unikraft.
+
+## Run and Use
+
+Use `kraft` to run the image and start a Unikraft instance:
+
+```bash
+kraft run --rm -M 256M --plat qemu --arch x86_64 unikraft.org/wamr:2.1
+```
+
+If the `--plat` argument is left out, it defaults to `qemu`.
+If the `--arch` argument is left out, it defaults to your system's CPU architecture.
+
+Once executed, it will print a "Hello, World!" message, from the `helloworld.c` source code file.
+
+## Inspect and Close
+
+To list information about the Unikraft instance, use:
+
+```bash
+kraft ps
+```
+
+```text
+NAME           KERNEL                      ARGS                                CREATED        STATUS   MEM   PORTS  PLAT
+reverent_loon  project://wamr:qemu/x86_64  /usr/bin/iwasm /app/helloworld.aot  9 seconds ago  running  244M         qemu/x86_64
+```
+
+The instance name is `reverent_loon`.
+To close the Unikraft instance, close the `kraft` process (e.g., via `Ctrl+c`) or run:
+
+```bash
+kraft rm reverent_loon
+```
+
+## Build and Run Locally
+
+The commands so far used the pre-built WAMR image available in the Unikraft registry.
+
+In oder to to build a local WAMR image, clone this repository and `cd` into this directory.
+Then use `kraft` to build an image locally:
+
+```bash
+kraft build --no-cache --no-update --plat qemu --arch x86_64
+```
+
+Similar to the `kraft run` command, if the `--plat` argument is left out, it defaults to `qemu`.
+If the `--arch` argument is left out, it defaults to your system's CPU architecture.
+
+In order to run the locally built image, use `.` (_dot_, the current directory)  as the final argument to the `kraft run` command:
+
+```bash
+kraft run --rm -M 256M --plat qemu --arch x86_64 .
+```
+
+Same as above, it will print a "Hello, World!" message.
+
+## `kraft` and `sudo`
+
+Mixing invocations of `kraft` and `sudo` can lead to unexpected behavior.
+Read more about how to start `kraft` without `sudo` at [https://unikraft.org/sudoless](https://unikraft.org/sudoless).
+
+## Learn More
+
+- [How to run unikernels locally](https://unikraft.org/docs/cli/running)
+- [How to build `Dockerfile` root filesystems with BuildKit](https://unikraft.org/guides/building-dockerfile-images-with-buildkit)

library/wamr/2.1/helloworld.c

@@ -0,0 +1,8 @@
+#include <stdio.h>
+
+int main(void)
+{
+	puts("Hello, World!");
+
+	return 0;
+}