Call ct_merge_seeds() so SEEDS env populates config.toml; default STATESYNC_RPC to tacchain-rpc.polkachu.com for statesync bootstrap.
Source-build Dockerfile (tacchain v1.6.0), init script with statesync via cometbft-common.sh, EVM RPC/WS on 8545/8546, and dshackle slugs tac/tac-spb.