Initial version just show the env vars available

Dockerfile

@@ -0,0 +1,8 @@
+# Docker image for the Drone build runner
+#
+#     CGO_ENABLED=0 go build -a -tags netgo
+#     docker build --rm=true -t plugins/drone-cache .
+
+FROM python
+COPY ./example.py /bin/example
+ENTRYPOINT ["/bin/example"]

example.py

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+#!/usr/bin/python
+import os
+
+for k,v in os.environ.items():
+    print('%s=%s' % (k, v))