add ncat to docker container to use for ipc tunnel

Dockerfile

@@ -113,9 +113,9 @@ RUN --mount=type=cache,target=/var/cache/apt,sharing=locked,id=apt-$TARGETARCH$T
         # 1. packaging dependencies
         apt-transport-https ca-certificates apt-utils gnupg2 curl wget \
         # 2. docker and init system dependencies
-        zlib1g-dev dumb-init gosu cron unzip grep \
+        zlib1g-dev dumb-init gosu cron unzip grep ncat \
         # 3. frivolous CLI helpers to make debugging failed archiving easier
-        # nano iputils-ping dnsutils htop procps jq yq
+        # nano iputils-ping dnsutils htop procps jq yq \
     && rm -rf /var/lib/apt/lists/*
 
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