build: set metadata for .ipynb to bash

lessons/0/exercise.ipynb

@@ -3,9 +3,7 @@
         {
             "cell_type": "markdown",
             "metadata": {},
-   "source": [
+            "source": ["# Exercise 0: Total rows"]
-    "# Exercise 0: Total rows"
-   ]
         },
         {
             "cell_type": "code",
@@ -16,8 +14,13 @@
         }
     ],
     "metadata": {
+        "kernelspec": {
+            "display_name": "Bash",
+            "language": "bash",
+            "name": "bash"
+        },
         "language_info": {
-   "name": "python"
+            "name": "bash"
         }
     },
     "nbformat": 4,

postBuild

@@ -2,5 +2,4 @@
 
 set -ex
 
-pip install -e ./bash_kernel
 python -m bash_kernel.install

start

@@ -1,6 +1,5 @@
 #!/bin/bash
 
-jupyter kernelspec remove python3
 python -m bash_kernel.install
 export PATH=$HOME/path_files:$PATH