Staged Docker build script

docker/2_build/build.sh

@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+
+mkdir -p ../3_run/wheelhouse;
+cp ../../requirements.txt .;
+
+docker build -t pillar_build -f build.docker .;
+docker run --rm \
+       -v "$(pwd)"/../3_run/wheelhouse:/data/wheelhouse \
+       pillar_build;
+
+rm requirements.txt;