rewrites the whole thing

backup.sh

@@ -0,0 +1,27 @@
+#! /bin/sh
+#
+
+if [ ! -f "${PWD}/.env" ]; then
+  echo "missing env file in ${PWD}"
+  exit 1
+fi
+
+set -a
+. "${PWD}/.env"
+set +a
+
+now="$(date +%Y-%m_%d-%H-%M-%S)"
+backup_path="${PWD}/backup-volumes/${now}"
+mkdir -p "${backup_path}"
+
+volumes="db traefik-dynamic traefik-certs traefik-logs traefik-static webroot"
+
+for volume in ${volumes}; do
+  mkdir -p "${backup_path}/${volume}"
+  docker run \
+    --rm \
+    --volume "${backup_path}/${volume}":/destination \
+    --volume "${PREFIX}-${volume}:/${volume}" \
+    ubuntu \
+    tar -cvzf "/destination/${volume}.tar.gz" -C "/${volume}" .
+done