feat: add tini to Dockerfile for cleaning up zombie processes (#969)

* feat: add timeout to simpleGit to prevent hung processes

* feat: add tini to Dockerfile for cleaning up zombie processes

* feat: add comment

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Co-authored-by: svcAPLBot <174728082+svcAPLBot@users.noreply.github.com>

Author: CasLubbers

Dockerfile

@@ -27,7 +27,7 @@ ENV NODE_ENV=production
 ENV NODE_PATH='dist'
 
 # Install dependencies
-RUN apk --no-cache add python3 git jq openssh
+RUN apk --no-cache add python3 git jq openssh tini
 
 # Install app
 RUN mkdir /app
@@ -42,4 +42,7 @@ RUN echo 'nouser:x:999:999::/home/nouser:/bin/sh' >> /etc/passwd
 USER node
 EXPOSE 8080
 
+# tini is used as PID 1 to reap zombie child processes (e.g. git-remote-http)
+# that Node.js would otherwise leave unreaped, causing PID exhaustion over time
+ENTRYPOINT ["/sbin/tini", "--"]
 CMD ["node", "--max-http-header-size", "16384", "dist/src/app.js"]