Megalodon: manage ARK servers over RCON from a web dashboard

Watches any number of ARK:SE servers (RCON for players and chat, the query
port for map, version and player cap), records joins, leaves, chat and an
audit trail, and keeps a player database across servers.

Control: save, broadcast, chat, whisper, kick, time of day, MOTD, wild dino
wipe, a raw console with history and macros, restarts with timed warnings and
a world save, optional start command and auto-start. Bans are kept by
Megalodon: timed, cluster-wide and re-enforced when the player returns.

Automation: schedules (every N or at times of day), Discord/ntfy/webhook
notifications, welcome message, chat word filter.

Access: viewer, moderator and admin roles, API tokens, Prometheus metrics.
cmd/fakeark simulates a server for trying it out.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

Dockerfile

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+# Build: docker build -t megalodon .
+FROM golang:1.27-alpine AS build
+WORKDIR /src
+COPY . .
+RUN CGO_ENABLED=0 go build -trimpath -ldflags "-s -w" -o /megalodon ./cmd/megalodon
+
+FROM alpine:3.20
+RUN apk add --no-cache tzdata ca-certificates && adduser -D -u 10001 megalodon && mkdir /config && chown megalodon /config
+COPY --from=build /megalodon /usr/local/bin/megalodon
+USER megalodon
+# The config file and the data directory (events, players, bans) both live under /config.
+ENV MEGALODON_CONFIG=/config/megalodon.json
+WORKDIR /config
+EXPOSE 8480
+HEALTHCHECK --interval=30s --timeout=3s CMD wget -qO- http://127.0.0.1:8480/healthz || exit 1
+ENTRYPOINT ["megalodon", "serve", "-listen", "0.0.0.0:8480"]