added entrypoint as root to update dirs perms

Dockerfile

@@ -48,6 +48,10 @@ FROM ${BASE_IMAGE} AS subtensor
 # ---- security hardening: create least-privilege user ----
 RUN addgroup --system --gid 10001 subtensor && \
   adduser  --system --uid 10001 --gid 10001 --home /home/subtensor --disabled-password subtensor
+
+# Install gosu for privilege dropping
+RUN apt-get update && apt-get install -y gosu && \
+  rm -rf /var/lib/apt/lists/*
 
 # Writable data directory to be used as --base-path
 RUN mkdir -p /data && chown -R subtensor:subtensor /data
@@ -61,10 +65,17 @@ COPY --chown=subtensor:subtensor --from=prod_builder /build/chainspecs/*.json ./
 COPY --from=prod_builder /build/target/production/node-subtensor /usr/local/bin/
 RUN chown subtensor:subtensor /usr/local/bin/node-subtensor
 
+# Copy and prepare entrypoint
+COPY ./scripts/docker_entrypoint.sh /entrypoint.sh
+RUN chmod +x /entrypoint.sh
+
 EXPOSE 30333 9933 9944
-USER subtensor
-ENTRYPOINT ["node-subtensor"]
-CMD ["--base-path","/data"]
+
+# Run entrypoint as root to handle permissions, then drop to subtensor user 
+# in the script
+USER root
+ENTRYPOINT ["/entrypoint.sh"]
+CMD ["--base-path", "/data"]
 
 ###############################################################################
 # ---------- 4. Local build stage --------------------------------------------
@@ -84,6 +95,10 @@ FROM ${BASE_IMAGE} AS subtensor-local
 RUN addgroup --system --gid 10001 subtensor && \
   adduser  --system --uid 10001 --gid 10001 --home /home/subtensor --disabled-password subtensor
 
+# Install gosu for privilege dropping
+RUN apt-get update && apt-get install -y gosu && \
+  rm -rf /var/lib/apt/lists/*
+
 RUN mkdir -p /data && chown -R subtensor:subtensor /data
 WORKDIR /home/subtensor
 
@@ -93,11 +108,18 @@ COPY --chown=subtensor:subtensor --from=local_builder /build/chainspecs/*.json .
 COPY --from=local_builder /build/target/release/node-subtensor /usr/local/bin/
 RUN chown subtensor:subtensor /usr/local/bin/node-subtensor
 
+# Copy and prepare entrypoint
+COPY ./scripts/docker_entrypoint.sh /entrypoint.sh
+RUN chmod +x /entrypoint.sh
+
 # Generate a local chainspec for convenience (run as root before user switch)
 RUN node-subtensor build-spec --disable-default-bootnode --raw --chain local > /localnet.json \
   && chown subtensor:subtensor /localnet.json
 
 EXPOSE 30333 9933 9944
-USER subtensor
-ENTRYPOINT ["node-subtensor"]
+
+# Run entrypoint as root to handle permissions, then drop to subtensor user
+# in the script
+USER root
+ENTRYPOINT ["/entrypoint.sh"]
 CMD ["--base-path","/data","--chain","/localnet.json"]

scripts/docker_entrypoint.sh

@@ -0,0 +1,56 @@
+#!/bin/sh
+set -e
+
+# Store original arguments to pass to the final exec call
+original_args="$@"
+
+# Set default values
+base_path='/data'
+chain_spec=''
+
+# Parse arguments to find the real --base-path and --chain, handles both
+# --key value and --key=value formats.
+while [ $# -gt 0 ]; do
+  case "$1" in
+    --base-path)
+      # Check if the next argument exists and is not another option
+      if [ -n "$2" ] && ! expr "$2" : '--' > /dev/null; then
+        base_path="$2"
+        shift
+      fi
+      ;;
+    --base-path=*)
+      base_path="${1#*=}"
+      ;;
+    --chain)
+      # Check if the next argument exists and is not another option
+      if [ -n "$2" ] && ! expr "$2" : '--' > /dev/null; then
+        chain_spec="$2"
+        shift
+      fi
+      ;;
+    --chain=*)
+      chain_spec="${1#*=}"
+      ;;
+  esac
+  shift
+done
+
+echo "entrypoint: ensuring permissions for base path: ${base_path}"
+mkdir -p "$base_path"
+chown -R subtensor:subtensor "$base_path"
+
+# Check if a chain spec was provided and if it's an existing file
+if [ -n "$chain_spec" ] && [ -f "$chain_spec" ]; then
+    echo "entrypoint: ensuring permissions for chain spec: ${chain_spec}"
+    chown subtensor:subtensor "$chain_spec"
+fi
+
+# Also check for the hardcoded /tmp/blockchain directory
+if [ -d "/tmp/blockchain" ]; then
+    chown -R subtensor:subtensor /tmp/blockchain
+fi
+
+# Execute node-subtensor with the original, unmodified arguments
+echo "executing: gosu subtensor node-subtensor $original_args"
+exec gosu subtensor node-subtensor $original_args