add readme

Author: deployable

README.md

@@ -0,0 +1,20 @@
+# Docker Debian Build Image
+
+A Debian image that includes the standard build tools.
+
+Avoids setting up build tools for all source installs. 
+
+## Usage
+
+```
+FROM deployable/debian-build:8
+
+RUN set -uex ;\
+    cd /tmp ;\
+    curl https://app.com/release/1.2.3.tar.gz | tar -xvf - ;\
+    cd 1.2.3 ;\
+    ./configure ;\
+    make install ;\
+    rm -rf /tmp/1.2.3
+``` 
+