Added docker compose to check broken links

docker/gh-pages-check/Dockerfile

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+FROM node:latest
+
+WORKDIR /usr/app
+RUN npm install linkinator 

docker/gh-pages-check/check-dev.sh

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+#!/bin/bash
+
+npx linkinator https://flightcontrol-master.github.io/MOOSE_DOCS_DEVELOP/ --config config.json

docker/gh-pages-check/check.sh

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+#!/bin/bash
+
+npx linkinator https://flightcontrol-master.github.io/MOOSE_DOCS/ --config /moose/config.json

docker/gh-pages-check/config.json

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+{
+    "concurrency": 100,
+    "config": "string",
+    "recurse": true,
+    "skip": "(wiki.hoggit.us|wiki.hoggitworld.com|Ops.FlightGroup|Ops.NavyGroup|Ops.ArmyGroup|Ops.Intel|Ops.Legion|Ops.Cohort|Ops.AirWing|Ops.PlayerTask|Ops.FlightControl|Ops.OpsGroup|Ops.OpsZone)",
+    "Xskip": "(wiki.hoggit.us|wiki.hoggitworld.com|Ops.FlightGroup|Ops.NavyGroup|Ops.ArmyGroup|Ops.Intel|Ops.Legion|Ops.Cohort|Ops.AirWing|Ops.PlayerTask|Ops.FlightControl|Ops.OpsGroup|Ops.OpsZone|AI.AI_A2A_|AI.AI_A2G)",
+    "Yskip": "(wiki.hoggit.us|wiki.hoggitworld.com)",
+    "verbosity": "error",
+    "Xsilent": true,
+    "timeout": 1000,
+    "retry": true,
+    "retryErrors": true,
+    "retryErrorsCount": 3,
+    "retryErrorsJitter": 5
+}

docker/gh-pages-check/docker-compose.yml

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+version: "3.5"
+
+services:
+  moose-gh-pages-checks:
+    image: moose/gh-pages-checks
+    #image: node:latest
+    #image: joskfg/np
+    build:
+      context: .
+      dockerfile: Dockerfile
+    container_name: moose-gh-pages-checks
+    volumes:
+      - .:/moose
+    stdin_open: true
+    tty: true
+    command: /bin/bash -c /moose/check.sh
+    #command: npx linkinator https://flightcontrol-master.github.io/MOOSE/