Merge pull request #14 from concourse/bionic-base-image

migrating to ubuntu:bionic and golang-builder

README.md

@@ -102,3 +102,56 @@ The currently encouraged way to build these images is by using the
 * `additional_tags`: *Optional.* The path to a file with whitespace-separated 
 list of tag values to tag the image with (in addition to the tag configured in 
 `source`).
+
+## Development
+
+### Prerequisites
+
+* golang is *required* - version 1.11.x or above is required for go mod to work
+* docker is *required* - version 17.06.x is tested; earlier versions may also
+  work.
+* go mod 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 registry-image-resource -f dockerfiles/alpine/Dockerfile .
+docker build -t registry-image-resource -f dockerfiles/ubuntu/Dockerfile .
+```
+
+#### Integration tests
+
+The integration requires 2 docker repos, one private and one public. The `docker build` 
+step requires setting `--build-args` so the integration will run.
+
+Run the tests with the following command:
+
+```sh
+docker build . -t registry-image-resource -f dockerfiles/alpine/Dockerfile \
+  --build-arg DOCKER_PRIVATE_USERNAME="some-username" \
+  --build-arg DOCKER_PRIVATE_PASSWORD="some-password" \
+  --build-arg DOCKER_PRIVATE_REPO="some/repo" \
+  --build-arg DOCKER_PUSH_USERNAME="some-username" \
+  --build-arg DOCKER_PUSH_PASSWORD="some-password" \
+  --build-arg DOCKER_PUSH_REPO="some/repo"
+
+docker build . -t registry-image-resource -f dockerfiles/ubuntu/Dockerfile \
+  --build-arg DOCKER_PRIVATE_USERNAME="some-username" \
+  --build-arg DOCKER_PRIVATE_PASSWORD="some-password" \
+  --build-arg DOCKER_PRIVATE_REPO="some/repo" \
+  --build-arg DOCKER_PUSH_USERNAME="some-username" \
+  --build-arg DOCKER_PUSH_PASSWORD="some-password" \
+  --build-arg DOCKER_PUSH_REPO="some/repo"
+```
+
+### Contributing
+
+Please make all pull requests to the `master` branch and ensure tests pass
+locally.

dockerfiles/ubuntu/Dockerfile

@@ -0,0 +1,37 @@
+FROM concourse/golang-builder as builder
+COPY . /src
+WORKDIR /src
+ENV CGO_ENABLED 0
+RUN go get -d ./...
+RUN go build -o /assets/in ./cmd/in
+RUN go build -o /assets/out ./cmd/out
+RUN go build -o /assets/check ./cmd/check
+RUN set -e; for pkg in $(go list ./...); do \
+		go test -o "/tests/$(basename $pkg).test" -c $pkg; \
+	done
+
+FROM ubuntu:bionic AS resource
+RUN apt-get update \
+      && apt-get install -y --no-install-recommends \
+        tzdata \
+        ca-certificates \
+        unzip \
+        zip \
+      && rm -rf /var/lib/apt/lists/*
+COPY --from=builder assets/ /opt/resource/
+RUN chmod +x /opt/resource/*
+
+FROM resource AS tests
+COPY --from=builder /tests /tests
+ADD . /docker-image-resource
+ARG DOCKER_PRIVATE_USERNAME
+ARG DOCKER_PRIVATE_PASSWORD
+ARG DOCKER_PRIVATE_REPO
+ARG DOCKER_PUSH_USERNAME
+ARG DOCKER_PUSH_PASSWORD
+ARG DOCKER_PUSH_REPO
+RUN set -e; for test in /tests/*.test; do \
+		$test -ginkgo.v; \
+	done
+
+FROM resource