[Docker-outside-of-docker] Increase backlog depth for socat proxy (#789) (#790)

Co-authored-by: Eljo George <eljog@github.com>

src/docker-outside-of-docker/devcontainer-feature.json

 {
     "id": "docker-outside-of-docker",
-    "version": "1.3.1",
+    "version": "1.3.2",
     "name": "Docker (docker-outside-of-docker)",
     "documentationURL": "https://github.com/devcontainers/features/tree/main/src/docker-outside-of-docker",
     "description": "Re-use the host docker socket, adding the Docker CLI to a container. Feature invokes a script to enable using a forwarded Docker socket within a container to run Docker commands.",

src/docker-outside-of-docker/install.sh

@@ -329,7 +329,7 @@ if [ "${ENABLE_NONROOT_DOCKER}" = "true" ] && [ "${SOURCE_SOCKET}" != "${TARGET_
             log "Enabling socket proxy."
             log "Proxying ${SOURCE_SOCKET} to ${TARGET_SOCKET} for vscode"
             sudoIf rm -rf ${TARGET_SOCKET}
-            (sudoIf socat UNIX-LISTEN:${TARGET_SOCKET},fork,mode=660,user=${USERNAME} UNIX-CONNECT:${SOURCE_SOCKET} 2>&1 | sudoIf tee -a \${SOCAT_LOG} > /dev/null & echo "\$!" | sudoIf tee \${SOCAT_PID} > /dev/null)
+            (sudoIf socat UNIX-LISTEN:${TARGET_SOCKET},fork,mode=660,user=${USERNAME},backlog=128 UNIX-CONNECT:${SOURCE_SOCKET} 2>&1 | sudoIf tee -a \${SOCAT_LOG} > /dev/null & echo "\$!" | sudoIf tee \${SOCAT_PID} > /dev/null)
         else
             log "Socket proxy already running."
         fi