diff --git a/tarback/docker.sh b/tarback/docker.sh
index 9e66adf..eb8d02a 100644
--- a/tarback/docker.sh
+++ b/tarback/docker.sh
@@ -1,7 +1,25 @@
 #!/bin/sh
 
-_tarback_plugin_docker_cmd='docker run -i --rm --workdir=/mnt --volume="$1":/mnt/"$1" alpine '
-TARBACK_TAR_CREATE_COMMAND="$_tarback_plugin_docker_cmd "'tar c -C "/mnt/$1" .'
-TARBACK_TAR_EXTRACT_COMMAND="$_tarback_plugin_docker_cmd "'tar x -C "/mnt/$1"'
+_tarback_plugin_docker_use_container=false
+
+short_options='c'
+while getopts "$short_options" arg; do
+    case "$arg" in
+        c)
+            _tarback_plugin_docker_use_container="$OPTARG"
+            ;;
+    esac
+done
+
+if "$_tarback_plugin_docker_use_container"; then
+    _tarback_plugin_docker_cmd='docker exec -i "$1" '
+    TARBACK_TAR_CREATE_COMMAND="$_tarback_plugin_docker_cmd $TARBACK_TAR_CREATE_COMMAND"
+    TARBACK_TAR_EXTRACT_COMMAND="$_tarback_plugin_docker_cmd $TARBACK_TAR_EXTRACT_COMMAND"
+else
+    _tarback_plugin_docker_cmd='docker run -i --rm --workdir=/mnt --volume="$1":/mnt/"$1" alpine '
+
+    TARBACK_TAR_CREATE_COMMAND="$_tarback_plugin_docker_cmd $(echo "$TARBACK_TAR_CREATE_COMMAND" | sed 's_$1_/mnt/$1_g')"
+    TARBACK_TAR_EXTRACT_COMMAND="$_tarback_plugin_docker_cmd $(echo "$TARBACK_TAR_EXTRACT_COMMAND" | sed 's_$1_/mnt/$1_g')"
+fi
 TARBACK_TAR_CREATE_USE_ALT_COMMAND=false
 TARBACK_TAR_EXTRACT_USE_ALT_COMMAND=false