proxy uncloud.sock socket to tcp port when running machine in container

Dockerfile

@@ -37,6 +37,7 @@ RUN crane pull "${CORROSION_IMAGE}" /corrosion.tar
 
 FROM docker:27.3.1-dind AS machine
 RUN apk --no-cache add \
+    socat \
     wireguard-tools
 # Create system group and user 'uncloud'.
 RUN addgroup -S uncloud && adduser -SHD -h /nonexistent -G uncloud -g "" uncloud

scripts/docker/entrypoint.sh

@@ -9,4 +9,8 @@ echo "Docker in Docker is ready."
 echo "Loading corrosion image from /images/corrosion.tar..."
 docker load < /images/corrosion.tar
 
+# Make machine API accessible from the host via port publishing.
+echo "Proxying Uncloud API port 51000/tcp to Unix socket /run/uncloud/uncloud.sock..."
+socat TCP-LISTEN:51000,reuseaddr,fork,bind="$(hostname -i)" UNIX-CONNECT:/run/uncloud/uncloud.sock &
+
 exec "$@"