created initial files for deploying homeassistant server

Dockerfile

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+FROM alpine:latest
+
+RUN apk --update --no-cache add yq
+
+COPY entrypoint.sh /entrypoint.sh
+RUN chmod a+x /entrypoint.sh

entrypoint.sh

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+#!/bin/sh
+
+DOMAIN=$DOMAIN
+SELECTOR=$HOMEASSISTANT
+HOMEASSISTANT_IP=$(ip addr show eth0 | grep "inet\b" | awk '{print $2}' | cut -d '/' -f1)
+HOST_FILE=/etc/system/data/dns/host.local;
+
+EXISTS=$(grep -w -F $SELECTOR $HOST_FILE);
+if [ -n "$EXISTS" ]; then
+	# selector already exists in hosts file and SCALE is not in use
+	IP=$(echo $EXISTS | cut -d ' ' -f1);
+	sed "s/'$IP'/'$HOMEASSISTANT_IP'/g" $HOST_FILE > /tmp/host.local
+	mv /tmp/host.local $HOST_FILE;
+else
+	echo "'$HOMEASSISTANT_IP' '$SELECTOR'" >> $HOST_FILE
+fi
+
+mkdir -p /etc/user/data/homeassistant/config
+
+if [ ! -f /etc/user/data/homeassistant/config/config.yaml ]; then
+
+	echo '# Loads default set of integrations. Do not remove.
+default_config:
+homeassistant:
+  external_url: "DOMAIN"
+http:
+  use_x_forwarded_for: true
+  trusted_proxies:
+  - 172.18.104.2
+  - 172.18.105.2
+# Load frontend themes from the themes folder
+frontend:
+  themes: !include_dir_merge_named themes
+
+automation: !include automations.yaml
+script: !include scripts.yaml
+scene: !include scenes.yaml
+	' >/etc/user/data/homeassistant/config/config.yaml  
+fi
+
+yq eval .'.homeassistant.external_url = "'$DOMAIN'"' -i /etc/user/data/homeassistant/config/config.yaml