clearer tts instruction

inference_tts.ipynb

@@ -11,6 +11,13 @@
     "Run the next cells one at a time up until the *STOP* and follow those instructions before continuing. You only have to do this the first time to setup the container."
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### Only do the below if you are using docker"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,
@@ -93,6 +100,13 @@
     "Now you can run the rest of the notebook and get an audio sample output. It will automatically download more models and such. The next time you use this container, you can just start below here as the dependencies will remain available until you delete the docker container."
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### Only do the above if you are using docker"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,