healthcheck doublecheck and tm server zip checksum

Dockerfile

@@ -2,7 +2,8 @@
 FROM node:lts-alpine
 # create directory, install xml editing tool and setup non-root user
 RUN adduser -h /app/server -s /bin/sh -D -u 1001 server && \
-    apk add xmlstarlet su-exec
+    apk add xmlstarlet su-exec && \
+    npm i -g npm@10.9.1
 USER server
 WORKDIR /app/server
 # copy useful trakman files and entrypoint command
@@ -13,6 +14,7 @@ COPY --chown=1001:1001 ./Plugins.ts ./package.json ./tsconfig.json ./CHANGELOG.m
 COPY --chown=1001:1001 --chmod=0755 ./docker_run.sh ./docker_run.sh
 # download dedicated server and remove unnecessary files
 RUN wget -O serv.zip http://files2.trackmaniaforever.com/TrackmaniaServer_2011-02-21.zip && \
+    if [ "$(sha256sum serv.zip |  cut -d ' ' -f 1)" != "dd021f49c3d58d45ee09f333015bdb35b19243a38fa65f202ca8a88fb6550c0b" ]; then exit 1; fi && \
     unzip serv.zip && \
     rm -r serv.zip CommandLine.html ListCallbacks.html ListMethods.html \
     Readme_Dedicated.html RemoteControlExamples TrackmaniaServer.exe manialink_dedicatedserver.txt

src/Main.ts

@@ -81,10 +81,17 @@ process.on('SIGINT', () => {
   process.exit(0)
 })
 
+let failedHealthChecks = 0
+
 setInterval(async () => {
   Logger.debug('Checking if the dedicated server is alive...')
-  const status = await Client.call('GetStatus')
+  let status = await Client.call('GetStatus')
   if (status instanceof Error) {
+    failedHealthChecks++
+    Logger.warn('Server did not respond to healthcheck')
+  }
+  // Surely checking two times is enough
+  if (failedHealthChecks > 1) {
     // We don't need to wait to restart here since the timeout is 10s anyway - plenty of time for serv to start
     await Logger.fatal(`Healthcheck failed - no connection to the server. Game state was: ${GameService.state}`)
   }