feat(library): Introduce Mosquitto 2.0.21 as library

.github/workflows/library-mosquitto2.0.21.yaml

@@ -0,0 +1,87 @@
+name: library/mosquitto:2.0.21
+
+on:
+  repository_dispatch:
+    types: [core_merge, musl_merge, mosquitto_merge]
+
+  workflow_dispatch:
+
+  schedule:
+  - cron: '0 0 * * *' # Everyday at 12AM
+
+  push:
+    branches: [main]
+    paths:
+    - 'library/mosquitto/2.0.21/**'
+    - '.github/workflows/library-mosquitto2.0.21.yaml'
+
+  pull_request:
+    types: [opened, synchronize, reopened]
+    branches: [main]
+    paths:
+    - 'library/mosquitto/2.0.21/**'
+    - '.github/workflows/library-mosquitto2.0.21.yaml'
+
+# Automatically cancel in-progress actions on the same branch
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event_name == 'pull_request_target' && github.head_ref || github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+        - plat: qemu
+          arch: x86_64
+        - plat: qemu
+          arch: arm64
+        - plat: fc
+          arch: x86_64
+        - plat: fc
+          arch: arm64
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Build mosquitto2.0.21
+      uses: unikraft/kraftkit@staging
+      with:
+        loglevel: debug
+        workdir: library/mosquitto/2.0.21
+        runtimedir: /github/workspace/.kraftkit
+        plat: ${{ matrix.plat }}
+        arch: ${{ matrix.arch }}
+        push: false
+        output: oci://index.unikraft.io/unikraft.org/mosquitto:2.0.21
+
+    - name: Archive OCI digests
+      uses: actions/upload-artifact@v4
+      with:
+        name: oci-digests-${{ matrix.arch }}-${{ matrix.plat }}
+        path: ${{ github.workspace }}/.kraftkit/oci/digests
+        if-no-files-found: error
+
+  push:
+    if: ${{ github.event_name == 'push' || github.event_name == 'schedule' }}
+    needs: [ build ]
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Login to OCI registry
+      uses: docker/login-action@v3
+      with:
+        registry: index.unikraft.io
+        username: ${{ secrets.REG_USERNAME }}
+        password: ${{ secrets.REG_TOKEN }}
+
+    - name: Retrieve, merge and push OCI digests
+      uses: ./.github/actions/merge-oci-digests
+      with:
+        name: index.unikraft.io/unikraft.org/mosquitto:2.0.21
+        push: true

README.md

@@ -57,6 +57,7 @@ kraft pkg ls --apps --update
 | [![](https://github.com/unikraft/catalog/actions/workflows/library-mariadb11.2.yaml/badge.svg)](https://github.com/unikraft/catalog/actions/workflows/library-mariadb11.2.yaml) | [`unikraft.org/mariadb:11.2`](library/mariadb/11.2) |
 | [![](https://github.com/unikraft/catalog/actions/workflows/library-memcached1.6.yaml/badge.svg)](https://github.com/unikraft/catalog/actions/workflows/library-memcached1.6.yaml) | [`unikraft.org/memcached:1.6`](library/memcached/1.6) |
 | [![](https://github.com/unikraft/catalog/actions/workflows/library-mongo6.0.yaml/badge.svg)](https://github.com/unikraft/catalog/actions/workflows/library-mongo6.0.yaml) | [`unikraft.org/mongo:6.0`](library/mongo/6.0) |
+| [![](https://github.com/unikraft/catalog/actions/workflows/library-mosquitto2.0.21.yaml/badge.svg)](https://github.com/unikraft/catalog/actions/workflows/library-mosquitto2.0.21.yaml) | [`unikraft.org/mosquitto:2.0.21`](library/mosquitto/2.0.21) |
 | [![](https://github.com/unikraft/catalog/actions/workflows/library-nats2.10.yaml/badge.svg)](https://github.com/unikraft/catalog/actions/workflows/library-nats2.10.yaml) | [`unikraft.org/nats:2.10`](library/nats/2.10) |
 | [![](https://github.com/unikraft/catalog/actions/workflows/library-nginx1.15.yaml/badge.svg)](https://github.com/unikraft/catalog/actions/workflows/library-nginx1.15.yaml) | [`unikraft.org/nginx:1.15`](library/nginx/1.15) |
 | [![](https://github.com/unikraft/catalog/actions/workflows/library-nginx1.25.yaml/badge.svg)](https://github.com/unikraft/catalog/actions/workflows/library-nginx1.25.yaml) | [`unikraft.org/nginx:1.25`](library/nginx/1.25) |

library/mosquitto/2.0.21/Dockerfile

@@ -0,0 +1,10 @@
+FROM eclipse-mosquitto:2.0.21 AS build
+FROM scratch
+
+COPY --from=build /usr/sbin/mosquitto /usr/sbin/mosquitto
+
+COPY --from=build /lib/ld-musl-x86_64.so.1 /lib/ld-musl-x86_64.so.1
+COPY --from=build /usr/lib/libssl.so.3 /usr/lib/libssl.so.3
+COPY --from=build /usr/lib/libcrypto.so.3 /usr/lib/libcrypto.so.3
+
+COPY ./mosquitto.conf mosquitto.conf

library/mosquitto/2.0.21/Kraftfile

@@ -0,0 +1,145 @@
+spec: v0.6
+
+name: mosquitto
+
+rootfs: ./Dockerfile
+
+cmd: ["/usr/sbin/mosquitto", "-c", "mosquitto.conf"]
+
+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_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_ARCH_PRCTL: 'y'
+    CONFIG_LIBPOSIX_PROCESS_CLONE: 'y'
+    CONFIG_LIBPOSIX_PROCESS_SIGNAL: 'y'
+    CONFIG_LIBPOSIX_USER_UID: 0
+    CONFIG_LIBPOSIX_USER_USERNAME: "root"
+    CONFIG_LIBPOSIX_USER: '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_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_LIBUKRANDOM_GETRANDOM: '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/mosquitto/2.0.21/README.md

@@ -0,0 +1,60 @@
+# Mosquitto 2.0.21 Image
+
+This directory contains the definition for the `unikraft.org/mosquitto:2.0.21` image running the Eclipse Mosquitto MQTT broker.
+
+## Prerequisites
+
+- Install Unikraft’s CLI toolchain:  
+    ```console
+    curl -sSL https://unikraft.org/install | console
+    ```
+- On the host, install Mosquitto clients (`mosquitto-clients` package) to run `mosquitto_sub` / `mosquitto_pub`.
+
+## Build and Run
+
+1. **Build the unikernel** (from this directory):
+    ```console
+    kraft build --no-cache --plat qemu --arch x86_64 .
+    ```
+2. **Run the unikernel** (as root):
+    ```console
+    kraft run \
+        -M 1024M \
+        -p 1883:1883 .
+    ```
+
+   By default this will listen for MQTT on port `1883`.
+
+## Connecting from the Host
+
+With the unikernel running, open a second terminal on your host and:
+
+- **Subscribe** to topic `test/topic`:
+
+  ```console
+  mosquitto_sub -h localhost -t 'test/topic' -v
+  ```
+- **Publish** a message:
+
+  ```console
+  mosquitto_pub -h localhost -t 'test/topic' -m 'Hello from Unikraft!'
+  ```
+
+You should see your “Hello…” payload appear in the subscriber terminal.
+
+## mosquitto.conf Active Settings
+
+Below are the **uncommented** lines in [`mosquitto.conf`](mosquitto.conf) (all other options remain at their defaults):
+
+| Setting           | Value          | Description                                                  |
+| ----------------- | -------------- | ------------------------------------------------------------ |
+| `user`            | `root`         | Run the broker as the `root` user (default if unset).        |
+| `listener`        | `1883 0.0.0.0` | Listen on TCP port **1883** on **all** interfaces (0.0.0.0). |
+| `allow_anonymous` | `true`         | Allow clients to connect without a username / password.        |
+
+Any additional configuration parameters can be enabled by uncommenting and adjusting their values in [`mosquitto.conf`](mosquitto.conf).
+
+## See also
+
+- [Unikraft CLI: Running Unikernels Locally](https://unikraft.org/docs/cli/running)
+- [Mosquitto Configuration Reference (`mosquitto.conf(5)`)](https://mosquitto.org/man/mosquitto-conf-5.html)