docs, docker : interface web (serve), variables, compose web + CLI

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015a8P6WMRPeqdpd5VCh6jAy

Dockerfile

@@ -7,6 +7,7 @@ COPY go.mod go.sum ./
 RUN go mod download
 COPY cmd ./cmd
 COPY internal ./internal
+COPY web ./web
 ARG VERSION=dev
 RUN CGO_ENABLED=0 go build -trimpath -ldflags="-s -w -X main.version=${VERSION}" \
     -o /out/pve-confsync ./cmd/pve-confsync
@@ -20,6 +21,9 @@ COPY --from=build /out/pve-confsync /usr/local/bin/pve-confsync
 USER confsync
 WORKDIR /data
 VOLUME /data
-ENV CONFSYNC_CONFIG=/config/confsync.yaml
+ENV CONFSYNC_CONFIG=/config/confsync.yaml DATA_DIR=/data LISTEN=:8080
+EXPOSE 8080
+HEALTHCHECK --interval=30s --timeout=3s CMD wget -qO- http://127.0.0.1:8080/healthz || exit 1
 ENTRYPOINT ["/usr/local/bin/pve-confsync"]
-CMD ["check"]
+# interface web ; la CLI reste disponible : docker compose run --rm confsync diff
+CMD ["serve"]