Run frigate & nginx inside of container as user 'frigate' and allow a way to set the uid and gid of this user to better facilitate network storage mounts.

docker/rootfs/etc/cont-init.d/01-envfile

@@ -0,0 +1,16 @@
+#! /bin/bash
+
+if [[ "$(ls /var/run/s6/container_environment/ | xargs)" == *"FILE__"* ]]; then
+  for FILENAME in /var/run/s6/container_environment/*; do
+    if [[ "${FILENAME##*/}" == "FILE__"* ]]; then
+      SECRETFILE=$(cat ${FILENAME})
+      if [[ -f ${SECRETFILE} ]]; then
+        FILESTRIP=${FILENAME//FILE__/}
+        cat ${SECRETFILE} > ${FILESTRIP}
+        echo "[env-init] ${FILESTRIP##*/} set from ${FILENAME##*/}"
+      else
+        echo "[env-init] cannot find secret in ${FILENAME##*/}"
+      fi
+    fi
+  done
+fi

docker/rootfs/etc/cont-init.d/10-adduser

@@ -0,0 +1,12 @@
+#!/usr/bin/with-contenv bash
+
+PUID=${PUID:-1000}
+PGID=${PGID:-1000}
+
+groupmod -o -g "$PGID" frigate
+usermod -o -u "$PUID" frigate
+
+chown -R frigate:frigate /opt/frigate/frigate
+chown -R frigate:frigate /opt/frigate/migrations
+chown -R frigate:frigate /opt/frigate/web
+chown -R frigate:frigate /usr/local/nginx