Add initial steamcache docs

services/steamcache.md

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+# Steamcache
+
+A light weight series of services that allow caching of steam downloads, windows updates and more!
+
+## Inspiration / Further Reading
+
+- [http://steamcache.github.io/](http://steamcache.github.io/)
+
+## Warning
+
+Please note this is a set of 3 services that work well for caching downloaded content. HOWEVER, you will be poisoning your DNS records and creating a small Man-In-The-Middle attach for some services. These are very real concerns that should be considered before running these services.
+
+## Hardware Concerns
+
+The official docs state you'll want "big, dedicated hardware". They are not lying. You'll want at least a 500Gb HD, preferably >1Tb and likely an O-Droid HC2 dedicated to this setup.
+
+This setup also assumes you will only be running steamcache on the main, wired network adapter with *no* firewall.
+
+We do **NOT** recommend running Steamcache alongside any other services. There are too many ways things can go wrong when putting this service alongside others.
+
+## Prep Install
+
+``` bash
+
+# Prep
+mkdir -p /tank/steam/cache/data /tank/steam/cache/logs
+
+# Setup static IP(s) for the main board running steam cache ; fix the IP addresses in the run scripts below
+
+```
+
+## Install / Run
+
+``` bash
+
+cat > /root/steamcache.sh <<EOF
+#!/bin/bash
+
+ARCH=\`arch\`
+UPSTREAM=""
+
+# Cleanup arch/container image here
+if [ \$ARCH == "aarch64" ]
+then
+    echo "64bit arm"
+    UPSTREAM="registry.lollipopcloud.solutions/arm64v8/steamcache:latest"
+else
+    echo "32bit arm"
+    UPSTREAM="registry.lollipopcloud.solutions/arm32v7/steamcache:latest"
+fi
+
+echo "Updating"
+docker pull \$UPSTREAM
+
+
+docker stop steamcache
+docker rm steamcache
+
+docker run --name steamcache \\
+    --restart unless-stopped \\
+    --network docker-private \\
+    --ip 172.30.0.5 \\
+    -v /tank/steam/cache/data:/data/cache \\
+    -v /tank/steam/cache/logs:/data/logs \\
+    \$UPSTREAM
+EOF
+
+cat > /root/steamcache-dns.sh <<EOF
+#!/bin/bash
+
+ARCH=\`arch\`
+UPSTREAM=""
+
+# Cleanup arch/container image here
+if [ \$ARCH == "aarch64" ]
+then
+    echo "64bit arm"
+    UPSTREAM="registry.lollipopcloud.solutions/arm64v8/steamcache-dns:latest"
+else
+    echo "32bit arm"
+    UPSTREAM="registry.lollipopcloud.solutions/arm32v7/steamcache-dns:latest"
+fi
+
+echo "Updating"
+docker pull \$UPSTREAM
+
+docker stop steamcache-dns
+docker rm steamcache-dns
+
+docker run --name steamcache-dns \\
+    --restart unless-stopped \\
+    -e USE_GENERIC_CACHE=true \\
+    -p 172.31.30.51:53/udp \\
+    -p 172.31.30.51:53/tcp \\
+    -e LANCACHE_IP=172.31.30.50 \\
+    -e STEAMCACHE_IP=172.31.30.50 \\
+    -e UPSTREAM_DNS=172.31.0.1 \\
+    \$UPSTREAM
+EOF
+
+cat > steamcache-sniproxy.sh <<EOF
+#!/bin/bash
+
+ARCH=\`arch\`
+UPSTREAM=""
+
+# Cleanup arch/container image here
+if [ \$ARCH == "aarch64" ]
+then
+    echo "64bit arm"
+    UPSTREAM="registry.lollipopcloud.solutions/arm64v8/steamcache-sniproxy:latest"
+else
+    echo "32bit arm"
+    UPSTREAM="registry.lollipopcloud.solutions/arm32v7/steamcache-sniproxy:latest"
+fi
+
+echo "Updating"
+docker pull \$UPSTREAM
+
+docker stop steamcache-sniproxy
+docker rm steamcache-sniproxy
+
+docker run --name steamcache-sniproxy \\
+    --restart unless-stopped \\
+    -p 443:443 \\
+    $UPSTREAM
+EOF
+
+```
+
+Simply execute ```/root/steamcache*.sh``` to update/run all of the steamcache containers/services.