chore: restore testnet compose files + lock in gRPC localhost fix#55
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`compose.testnet.env` and `docker-compose.testnet.yml` were deleted at some point during the May 22 testnet stack reshuffles. The running testnet container survived but was orphaned from its compose context: `docker compose down/up` would no longer reach it, and a `docker rm` would have lost the env config entirely (with no way to recreate without re-doing the manual `docker run` from scratch). Today (2026-05-26) the missing files surfaced via a different bug: the indexer's gRPC tail subscription was failing every ~130s on `https://grpc-testnet.sentrixchain.com:443`. Cloudflare's HTTP/2 stream timeout was resetting the long-running subscription. Indexer sits on the same host as the testnet fullnode-1 gRPC server (`127.0.0.1:50055`) under `network_mode: host`, so the public URL was doing a pointless hop through CF + Caddy. Fix already applied via manual `docker run` with `GRPC_URL=http://127.0.0.1:50055` — 0 h2 errors confirmed across the 130s failure cycle after the swap. This commit locks in: * `compose.testnet.env.example` — template with the local GRPC_URL and the why-not-public-URL rationale in comments. `compose.testnet.env` itself stays gitignored (carries real Postgres password). * `docker-compose.testnet.yml` — testnet port overrides (:5437 pg, :8089 api) plus the `network_mode: host` declaration the manual `docker run` was carrying. * `.gitignore` — `compose.testnet.env` added alongside `compose.env`. Next clean compose-driven testnet recreate: docker compose -f docker-compose.yml -f docker-compose.testnet.yml \ --env-file compose.testnet.env \ --project-name indexer-rs-testnet \ up -d --force-recreate The running container survives any docker daemon or host restart via its `unless-stopped` policy. Only a `docker rm` would force a recreate, and now there are committed files for that recreate.
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Summary
compose.testnet.env+docker-compose.testnet.ymlwere deleted at some point during the May 22 testnet stack reshuffles. Running testnet container survived (orphaned from compose context); a futuredocker rmwould have lost the env config with no recovery path.Today's gRPC tail reconnect-loop bug surfaced the gap. Fix applied manually via
docker runwithGRPC_URL=http://127.0.0.1:50055— 0 h2 errors confirmed past the 130s failure cycle. This PR locks the fix into committed config:compose.testnet.env.example— template with local GRPC_URL + why-not-public rationale in comments.compose.testnet.envstays gitignored.docker-compose.testnet.yml— testnet port overrides (:5437pg,:8089api) +network_mode: hostfor the indexer (required for the localhost gRPC_URL to resolve to the host's loopback)..gitignore— addscompose.testnet.env.Risk tier
Test plan
docker compose -f docker-compose.yml -f docker-compose.testnet.yml --env-file compose.testnet.env --project-name indexer-rs-testnet config— resolves cleanly withGRPC_URL: http://127.0.0.1:50055+network_mode: hostfor the indexerRollback
Revert this PR. The running container is independent of these files (orphaned from compose); revert only affects future recreates.