Redo docker build system with buildkit+multi-stage and cache pio packages (#2338)

docker/hassio-rootfs/etc/services.d/esphome/run

@@ -0,0 +1,29 @@
+#!/usr/bin/with-contenv bashio
+# ==============================================================================
+# Community Hass.io Add-ons: ESPHome
+# Runs the ESPHome dashboard
+# ==============================================================================
+
+export ESPHOME_IS_HASSIO=true
+
+if bashio::config.true 'leave_front_door_open'; then
+    export DISABLE_HA_AUTHENTICATION=true
+fi
+
+if bashio::config.true 'streamer_mode'; then
+    export ESPHOME_STREAMER_MODE=true
+fi
+
+if bashio::config.true 'status_use_ping'; then
+    export ESPHOME_DASHBOARD_USE_PING=true
+fi
+
+if bashio::config.has_value 'relative_url'; then
+    export ESPHOME_DASHBOARD_RELATIVE_URL=$(bashio::config 'relative_url')
+fi
+
+export PLATFORMIO_CORE_DIR=/data/cache/platformio
+export PLATFORMIO_GLOBALLIB_DIR=/piolibs
+
+bashio::log.info "Starting ESPHome dashboard..."
+exec esphome dashboard /config/esphome --socket /var/run/esphome.sock --hassio