Chore: dev, contributions, etc.

CONTRIBUTING.md

@@ -0,0 +1,31 @@
+# Contributing
+
+All contributions are welcome. Features, docs, bugs, ....
+
+We currently lack a proper COC, so the least we ask is: we all respect one another.
+
+Questions, comments, etc. — we are happy to help. :-)
+
+## Development
+
+For features, bugfixes, docs etc. make a branch and open a pull-request.
+
+For local testing of your changes:
+
+- run `make setup` to configure the default builder and trust it.
+- run `make test` to build an (app) image from `./samples/deno` with one entrypoints:
+- test it: `docker run --rm -p 8080:8080 test-deno-app`
+
+## Release
+
+Make a release branch to adjust the version in `buildpack.toml` and tag it:
+
+```sh
+git checkout -b release-x.y.z
+vi buildpack.toml # to adjust the version
+git commit -a -m 'Chore: update version'
+git push origin release-x.y.z
+git tag -a vX.Y.Z
+git push --tags
+```
+

README.md

@@ -61,10 +61,6 @@ Contains a version such as `vA.B.C`.
 
 > (last) The buildpack also supports a `.dvmrc` file.
 
-## Development
+## Contributions?
 
-Run `make setup` to configure the default builder and trust it.
-
-Run `make test` to build an (app) image from `./samples/deno` with one entrypoints:
-
-- web: `docker run --rm -p 8080:8080 test-deno-app`
+See [CONTRIBUTING.md](CONTRIBUTING.md) for everything (local setup, testing, releasing).