Move pip/pipx to top of installation instructions

Less intimidating than Docker, hopefully.

docs/installation.rst

@@ -11,67 +11,7 @@ on to your machine, or you can install it using Docker.
 
 .. contents::
 
-Using Docker
-------------
-
-A Docker image containing the latest release of Datasette is published to Docker
-Hub here: https://hub.docker.com/r/datasetteproject/datasette/
-
-If you have Docker installed (for example with `Docker for Mac
-<https://www.docker.com/docker-mac>`_ on OS X) you can download and run this
-image like so::
-
-    docker run -p 8001:8001 -v `pwd`:/mnt \
-        datasetteproject/datasette \
-        datasette -p 8001 -h 0.0.0.0 /mnt/fixtures.db
-
-This will start an instance of Datasette running on your machine's port 8001,
-serving the ``fixtures.db`` file in your current directory.
-
-Now visit http://127.0.0.1:8001/ to access Datasette.
-
-(You can download a copy of ``fixtures.db`` from
-https://latest.datasette.io/fixtures.db )
-
-To upgrade to the most recent release of Datasette, run the following::
-
-    docker pull datasetteproject/datasette
-
-Loading Spatialite
-~~~~~~~~~~~~~~~~~~
-
-The ``datasetteproject/datasette`` image includes a recent version of the
-:ref:`SpatiaLite extension <spatialite>` for SQLite. To load and enable that
-module, use the following command::
-
-    docker run -p 8001:8001 -v `pwd`:/mnt \
-        datasetteproject/datasette \
-        datasette -p 8001 -h 0.0.0.0 /mnt/fixtures.db \
-        --load-extension=/usr/local/lib/mod_spatialite.so
-
-You can confirm that SpatiaLite is successfully loaded by visiting
-http://127.0.0.1:8001/-/versions
-
-Installing plugins
-~~~~~~~~~~~~~~~~~~
-
-If you want to install plugins into your local Datasette Docker image you can do
-so using the following recipe. This will install the plugins and then save a
-brand new local image called ``datasette-with-plugins``::
-
-    docker run datasetteproject/datasette \
-        pip install datasette-vega
-
-    docker commit $(docker ps -lq) datasette-with-plugins
-
-You can now run the new custom image like so::
-
-    docker run -p 8001:8001 -v `pwd`:/mnt \
-        datasette-with-plugins \
-        datasette -p 8001 -h 0.0.0.0 /mnt/fixtures.db
-
-You can confirm that the plugins are installed by visiting
-http://127.0.0.1:8001/-/plugins
+.. _installation_pip:
 
 Install using pip
 -----------------
@@ -98,6 +38,8 @@ You can now run Datasette like so::
 
 If you want to start making contributions to the Datasette project by installing a copy that lets you directly modify the code, take a look at our guide to :ref:`devenvironment`.
 
+.. _installation_pipx:
+
 Install using pipx
 ------------------
 
@@ -184,3 +126,67 @@ To upgrade a plugin within the pipx environment use ``pipx runpip datasette inst
             "version": "0.6.2"
         }
     ]
+
+.. _installation_docker:
+
+Using Docker
+------------
+
+A Docker image containing the latest release of Datasette is published to Docker
+Hub here: https://hub.docker.com/r/datasetteproject/datasette/
+
+If you have Docker installed (for example with `Docker for Mac
+<https://www.docker.com/docker-mac>`_ on OS X) you can download and run this
+image like so::
+
+    docker run -p 8001:8001 -v `pwd`:/mnt \
+        datasetteproject/datasette \
+        datasette -p 8001 -h 0.0.0.0 /mnt/fixtures.db
+
+This will start an instance of Datasette running on your machine's port 8001,
+serving the ``fixtures.db`` file in your current directory.
+
+Now visit http://127.0.0.1:8001/ to access Datasette.
+
+(You can download a copy of ``fixtures.db`` from
+https://latest.datasette.io/fixtures.db )
+
+To upgrade to the most recent release of Datasette, run the following::
+
+    docker pull datasetteproject/datasette
+
+Loading Spatialite
+~~~~~~~~~~~~~~~~~~
+
+The ``datasetteproject/datasette`` image includes a recent version of the
+:ref:`SpatiaLite extension <spatialite>` for SQLite. To load and enable that
+module, use the following command::
+
+    docker run -p 8001:8001 -v `pwd`:/mnt \
+        datasetteproject/datasette \
+        datasette -p 8001 -h 0.0.0.0 /mnt/fixtures.db \
+        --load-extension=/usr/local/lib/mod_spatialite.so
+
+You can confirm that SpatiaLite is successfully loaded by visiting
+http://127.0.0.1:8001/-/versions
+
+Installing plugins
+~~~~~~~~~~~~~~~~~~
+
+If you want to install plugins into your local Datasette Docker image you can do
+so using the following recipe. This will install the plugins and then save a
+brand new local image called ``datasette-with-plugins``::
+
+    docker run datasetteproject/datasette \
+        pip install datasette-vega
+
+    docker commit $(docker ps -lq) datasette-with-plugins
+
+You can now run the new custom image like so::
+
+    docker run -p 8001:8001 -v `pwd`:/mnt \
+        datasette-with-plugins \
+        datasette -p 8001 -h 0.0.0.0 /mnt/fixtures.db
+
+You can confirm that the plugins are installed by visiting
+http://127.0.0.1:8001/-/plugins