Merge pull request #24 from concourse/bionic-base-image

Migrating to ubuntu:bionic and golang-builder

README.md

@@ -43,3 +43,32 @@ You'll need a separate resource for each Tracker project.
 * `repos`: *Required.* Paths to the git repositories which will contain the delivering commits.
 
 * `comment`: *Optional.* A file containing a comment to leave on any delivered stories.
+
+## Development
+
+### Prerequisites
+
+* golang is *required* - version 1.9.x is tested; earlier versions may also
+  work.
+* docker is *required* - version 17.06.x is tested; earlier versions may also
+  work.
+* godep is used for dependency management of the golang packages.
+
+### Running the tests
+
+The tests have been embedded with the `Dockerfile`; ensuring that the testing
+environment is consistent across any `docker` enabled platform. When the docker
+image builds, the test are run inside the docker container, on failure they
+will stop the build.
+
+Run the tests with the following commands for both `alpine` and `ubuntu` images:
+
+```sh
+docker build -t tracker-resource -f dockerfiles/alpine/Dockerfile .
+docker build -t tracker-resource -f dockerfiles/ubuntu/Dockerfile .
+```
+
+### Contributing
+
+Please make all pull requests to the `master` branch and ensure tests pass
+locally.

dockerfiles/ubuntu/Dockerfile

@@ -0,0 +1,31 @@
+FROM concourse/golang-builder as builder
+COPY . /go/src/github.com/concourse/tracker-resource
+ENV CGO_ENABLED 0
+ENV GOPATH /go/src/github.com/concourse/tracker-resource/Godeps/_workspace:${GOPATH}
+ENV PATH /go/src/github.com/concourse/tracker-resource/Godeps/_workspace/bin:${PATH}
+RUN go build -o /assets/out github.com/concourse/tracker-resource/out/cmd/out
+RUN go build -o /assets/in github.com/concourse/tracker-resource/in/cmd/in
+RUN go build -o /assets/check github.com/concourse/tracker-resource/check/cmd/check
+RUN set -e; mkdir /tests; for pkg in $(go list ./...); do \
+                cp -a $(go list -f '{{.Dir}}' $pkg) /tests/$(basename $pkg); \
+		go test -o "/tests/$(basename $pkg)/run" -c $pkg; \
+	done
+
+FROM ubuntu:bionic AS resource
+RUN apt-get update \
+      && DEBIAN_FRONTEND=noninteractive \
+      apt-get install -y --no-install-recommends \
+        tzdata \
+        ca-certificates \
+        git \
+      && rm -rf /var/lib/apt/lists/*
+COPY --from=builder /assets /opt/resource
+
+FROM resource AS tests
+COPY --from=builder /tests /tests
+RUN set -e; for test in /tests/*/run; do \
+                cd $(dirname $test); \
+		./run; \
+	done
+
+FROM resource