The libp2p host: identify + kad (client) + mdns + bitswap (beetswap, MAX_MULTIHASH_SIZE = 64), on P2P_LISTEN (4001 — publish it; PUBLIC_ADDR announces it). Identify carries the hull's baseUrl, so peers keep calling meta-share's public API.
The blockstore (<data>/ipfs/blocks.redb): material blocks + leaf refs into files (meta-core library files over WebDAV / a local /files mount, and cache containers on the shared volume) — one copy on disk.
Bitswap ingress: big dag-pb fetches land in tmp/<cid>/ and are renamed into cache/; a genuine play commits them to a background fill.
Gateway discovery (identify gateways= → GET {baseUrl}/api/gateway/plugins), exposed to the hull as /ipfs-tier/directory.
Serves the public /ipfs/:cid gateway (relayed by the hull) and the hull's /ipfs-tier/* facade.

Configuration

meta-share's variables, unchanged: P2P_LISTEN, PUBLIC_ADDR, KAD_*, BOOTSTRAP_PEERS, ENABLE_MDNS, TARGET_PEER_COUNT, META_SHARE_MAX_CONNS, META_SHARE_BLOCKSTORE_CACHE_MB, META_SHARE_INGRESS_*, META_SHARE_LOOSE_BLOCK_MAX_BYTES, META_SHARE_LOCAL_FILES_PATH, META_SHARE_FILES_PATH, META_SHARE_SEED_DHT_PROVIDE, META_SHARE_DATA, plus META_SHARE_HULL_URL. meta_core_url / peer_url are asked from the hull at boot (GET /internal/network), env as the fallback.

Own settings (config plane, META_SHARE_PLUGIN_STATE_DIR, default /state → config.json): cohort namespace, DHT/pinned bootstrap peers, mDNS, DHT announce, max connections, background completion. Edited from meta-share's dashboard (Plugins → ipfs → configure); config.json wins and is written onto the env names above at boot, so env only seeds it. Saving restarts the plugin. PUBLIC_ADDR / P2P_LISTEN stay env-only (they follow the published port and the box's IP).

Boot order is handled here, not by compose: before opening ipfs/blocks.redb the plugin waits (≤ 60 s) for the hull's /health, because the hull migrates its material index out of that file on its first boot after the split and redb is single-process.

Build

docker build -t meta-transport-ipfs .
docker build --build-context sdk=../meta-feeder-sdk -t meta-transport-ipfs .