Add post-receive sample hook

README.md

@@ -31,6 +31,9 @@ The `strecken.pmtiles` file is best generated using the
 possible using the `umap-extractor.py` script, which takes care of
 exporting the data as well as the graphical style for each layer. 
 
+A sample git `post-receive` hook is provided to build and deploy the
+map when the map data is pushed.
+
 ### Input Data
 
 The input data for `strecken.pmtiles` consists of a `data/` folder,

scripts/post-receive.sample

@@ -0,0 +1,8 @@
+#!/bin/bash
+temp=$(mktemp -d)
+outdir=/var/www/html/$(basename $(pwd))
+mkdir -p $outdir
+git --work-tree=$temp --git-dir=$GIT_DIR checkout -f
+~/scripts/mapbuilder.sh $temp  $outdir
+cp $temp/layers.json $outdir
+rm -r $temp