[Bug]: UDP isn't fully supported for public mapped ports

[wolfman42]

Testcontainers version

3.9.0

Using the latest Testcontainers version?

Yes

Host OS

Windows

Host arch

x86

.NET version

8.0.303

Docker version

Client:       Podman Engine
Version:      5.1.1
API Version:  5.1.1
Go Version:   go1.22.3
Git Commit:   bda6eb03dcbcf12a5b7ae004c1240e38dd056d24
Built:        Tue Jun  4 16:40:05 2024
OS/Arch:      windows/amd64

Server:       Podman Engine
Version:      5.0.3
API Version:  5.0.3
Go Version:   go1.22.2
Built:        Thu May  9 19:00:00 2024
OS/Arch:      linux/amd64

Docker info

host:
  arch: amd64
  buildahVersion: 1.35.4
  cgroupControllers:
  - cpuset
  - cpu
  - cpuacct
  - blkio
  - memory
  - devices
  - freezer
  - net_cls
  - perf_event
  - net_prio
  - hugetlb
  - pids
  - rdma
  cgroupManager: cgroupfs
  cgroupVersion: v1
  conmon:
    package: conmon-2.1.10-1.fc40.x86_64
    path: /usr/bin/conmon
    version: 'conmon version 2.1.10, commit: '
  cpuUtilization:
    idlePercent: 99.61
    systemPercent: 0.15
    userPercent: 0.24
  cpus: 8
  databaseBackend: sqlite
  distribution:
    distribution: fedora
    variant: container
    version: "40"
  eventLogger: journald
  freeLocks: 2044
  hostname: AYUSAUSAD391643
  idMappings:
    gidmap: null
    uidmap: null
  kernel: 5.10.102.1-microsoft-standard-WSL2
  linkmode: dynamic
  logDriver: journald
  memFree: 32627798016
  memTotal: 33498894336
  networkBackend: netavark
  networkBackendInfo:
    backend: netavark
    dns:
      package: aardvark-dns-1.10.0-1.fc40.x86_64
      path: /usr/libexec/podman/aardvark-dns
      version: aardvark-dns 1.10.0
    package: netavark-1.10.3-3.fc40.x86_64
    path: /usr/libexec/podman/netavark
    version: netavark 1.10.3
  ociRuntime:
    name: crun
    package: crun-1.15-1.fc40.x86_64
    path: /usr/bin/crun
    version: |-
      crun version 1.15
      commit: e6eacaf4034e84185fd8780ac9262bbf57082278
      rundir: /run/crun
      spec: 1.0.0
      +SYSTEMD +SELINUX +APPARMOR +CAP +SECCOMP +EBPF +CRIU +LIBKRUN +WASM:wasmedge +YAJL
  os: linux
  pasta:
    executable: /usr/bin/pasta
    package: passt-0^20240510.g7288448-1.fc40.x86_64
    version: |
      pasta 0^20240510.g7288448-1.fc40.x86_64
      Copyright Red Hat
      GNU General Public License, version 2 or later
        <https://www.gnu.org/licenses/old-licenses/gpl-2.0.html>
      This is free software: you are free to change and redistribute it.
      There is NO WARRANTY, to the extent permitted by law.
  remoteSocket:
    exists: true
    path: /run/podman/podman.sock
  rootlessNetworkCmd: ""
  security:
    apparmorEnabled: false
    capabilities: CAP_CHOWN,CAP_DAC_OVERRIDE,CAP_FOWNER,CAP_FSETID,CAP_KILL,CAP_NET_BIND_SERVICE,CAP_SETFCAP,CAP_SETGID,CAP_SETPCAP,CAP_SETUID,CAP_SYS_CHROOT
    rootless: false
    seccompEnabled: true
    seccompProfilePath: /usr/share/containers/seccomp.json
    selinuxEnabled: false
  serviceIsRemote: true
  slirp4netns:
    executable: ""
    package: ""
    version: ""
  swapFree: 8589934592
  swapTotal: 8589934592
  uptime: 40h 55m 39.00s (Approximately 1.67 days)
  variant: ""
plugins:
  authorization: null
  log:
  - k8s-file
  - none
  - passthrough
  - journald
  network:
  - bridge
  - macvlan
  - ipvlan
  volume:
  - local
registries:
  search:
  - docker.io
store:
  configFile: /usr/share/containers/storage.conf
  containerStore:
    number: 1
    paused: 0
    running: 1
    stopped: 0
  graphDriverName: overlay
  graphOptions:
    overlay.imagestore: /usr/lib/containers/storage
    overlay.mountopt: nodev,metacopy=on
  graphRoot: /var/lib/containers/storage
  graphRootAllocated: 269490393088
  graphRootUsed: 30118424576
  graphStatus:
    Backing Filesystem: extfs
    Native Overlay Diff: "false"
    Supports d_type: "true"
    Supports shifting: "false"
    Supports volatile: "true"
    Using metacopy: "true"
  imageCopyTmpDir: /var/tmp
  imageStore:
    number: 65
  runRoot: /run/containers/storage
  transientStore: false
  volumePath: /var/lib/containers/storage/volumes
version:
  APIVersion: 5.0.3
  Built: 1715299200
  BuiltTime: Thu May  9 19:00:00 2024
  GitCommit: ""
  GoVersion: go1.22.2
  Os: linux
  OsArch: linux/amd64
  Version: 5.0.3

What happened?

_container.GetMappedPublicPort("161/udp"); This call currently causes an error.

However, UDP is supported when configuring the container:

        _container = new ContainerBuilder()
            .WithName($"{Guid.NewGuid().ToString("D")}")
            .WithImage(...)
            .WithPortBinding("161/udp", true);

The problem is this hard-coded line

testcontainers-dotnet/src/Testcontainers/Containers/DockerContainer.cs

Line 239 in a0f1f76

if (_container.NetworkSettings.Ports.TryGetValue($"{containerPort}/tcp", out var portBindings) && ushort.TryParse(portBindings[0].HostPort, out var publicPort))

in the implementation of public ushort GetMappedPublicPort(string containerPort)

Relevant log output

No response

Additional information

A possible solution would be to allow protocol suffixes and only append /tcp if no suffix is set.