Add rdd-guest socket bridge for Windows Docker socket forwarding

Build rdd-guest from rancher-desktop-daemon's cmd/rdd-guest and include
it in the VM image. Add a systemd unit that starts it on WSL2 instances
as part of rancher-desktop.target.

Signed-off-by: Nino Kodabande <nkodabande@suse.com>

Author: Nino-K

Dockerfile

@@ -12,6 +12,11 @@ RUN --mount=type=cache,target=/root/.cache/go-build --mount=type=cache,target=/g
 RUN --mount=type=cache,target=/root/.cache/go-build --mount=type=cache,target=/go/pkg/mod \
     go build -ldflags '-s -w' -o /go/bin/rancher-desktop-guest-agent ./src/go/guestagent
 
+RUN git clone https://github.com/rancher-sandbox/rancher-desktop-daemon --depth=1 /daemon
+WORKDIR /daemon
+RUN --mount=type=cache,target=/root/.cache/go-build --mount=type=cache,target=/go/pkg/mod \
+    CGO_ENABLED=0 go build -ldflags '-s -w' -o /go/bin/rdd-guest ./cmd/rdd-guest
+
 COPY src /rd
 WORKDIR /rd/rd-init
 RUN --mount=type=cache,target=/root/.cache/go-build --mount=type=cache,target=/go/pkg/mod \

config.sh

@@ -117,6 +117,7 @@ if [[ ${kiwi_profiles:-} =~ wsl ]]; then
     systemctl enable network-setup
     systemctl enable rancher-desktop-guest-agent.service
     systemctl enable wsl-proxy.service
+    systemctl enable rdd-guest.service
     # Do not manage /tmp; that is managed by WSL.
     mkdir -p /usr/local/lib/tmpfiles.d
     touch /usr/local/lib/tmpfiles.d/fs-tmp.conf

root/usr/local/lib/systemd/system/rdd-guest.service

@@ -0,0 +1,14 @@
+[Unit]
+Description=Rancher Desktop Guest Socket Bridge
+Documentation=https://github.com/rancher-sandbox/rancher-desktop-daemon
+ConditionVirtualization=wsl
+
+[Service]
+ExecStart=/usr/local/bin/rdd-guest
+Restart=on-failure
+RestartSec=5s
+StandardOutput=journal
+StandardError=journal
+
+[Install]
+WantedBy=rancher-desktop.target