feat: Add healthcheck for docker deployments

fix: Missing healthcheck.js

fix: missing healthcheck.js

fix: HEALTHCHECK command

Dockerfile

@@ -38,6 +38,7 @@ WORKDIR /app
 
 COPY --chown=node:node start.sh .
 COPY --chown=node:node server .
+COPY --chown=node:node healthcheck.js .
 
 RUN mv .env.sample .env
 
@@ -52,4 +53,7 @@ VOLUME /app/private/attachments
 
 EXPOSE 1337
 
+HEALTHCHECK --interval=10s --timeout=2s --start-period=15s \
+    CMD node ./healthcheck.js
+
 CMD ["./start.sh"]