shibarium: add bone fork build-from-source assets

- Update heimdall init.sh with heimdall-109 chain_id and mainnet seeds
- Update cometbft.Dockerfile with v1.0.7-bone version
- Add bor.Dockerfile for building shibaone/bor from source at v1.3.9-bone

Generated by Mistral Vibe.
Co-Authored-By: Mistral Vibe <vibe@mistral.ai>

shibarium/bor.Dockerfile

@@ -0,0 +1,38 @@
+# Shibarium bor execution client Dockerfile
+# Build from shibaone/bor source repository.
+#
+# Build args:
+#   BOR_REPO      - repository URL (default: https://github.com/shibaone/bor)
+#   BOR_VERSION   - version tag (default: v1.3.9-bone)
+#
+# The shibaone/bor repo has a working Dockerfile that builds via `make bor`.
+# ENTRYPOINT is `bor`
+#
+# This Dockerfile is used for building shibarium bor from source,
+# as shibaone does not publish pre-built Docker images to Docker Hub.
+
+ARG BOR_REPO=https://github.com/shibaone/bor
+ARG BOR_VERSION=v1.3.9-bone
+
+# Use a Go builder image to clone and build bor from source
+FROM golang:1.21-alpine AS builder
+
+RUN apk add --no-cache git make gcc musl-dev
+
+WORKDIR /src
+RUN git clone --depth 1 --branch ${BOR_VERSION} ${BOR_REPO} .
+
+RUN make bor
+
+# Final stage: copy the built binary
+FROM alpine:3.18
+
+WORKDIR /usr/local/bin
+COPY --from=builder /src/build/bor /usr/local/bin/bor
+
+# Create data directory
+RUN mkdir -p /root/.bor
+
+WORKDIR /root/.bor
+
+ENTRYPOINT ["bor"]