shibarium: add heimdall node ASSET (cometbft.Dockerfile, init.sh)

shibarium/cometbft.Dockerfile

@@ -0,0 +1,25 @@
+# Shibarium heimdall node Dockerfile
+# Build from the base heimdall image + copy entrypoint scripts.
+# Uses the standard cometbft-node pattern from vibe-node.
+#
+# Build args:
+#   CL_IMAGE     - base heimdall image (default: shibaone/heimdall)
+#   CL_VERSION   - heimdall version tag
+#
+# The entrypoint is init.sh which sources cometbft-common.sh and bootstraps
+# the node before exec'ing heimdalld start.
+
+ARG CL_IMAGE=shibaone/heimdall
+ARG CL_VERSION=TODO_VERIFY_VERSION
+
+FROM ${CL_IMAGE}:${CL_VERSION}
+
+# Copy the shared CometBFT helpers and chain-specific entrypoint
+COPY ./scripts/cometbft-common.sh /usr/local/bin/cometbft-common.sh
+COPY ./scripts/init.sh            /usr/local/bin/init.sh
+
+# Make init.sh executable
+RUN chmod +x /usr/local/bin/init.sh
+
+# Set entrypoint to our init script
+ENTRYPOINT ["init.sh"]