Add basic dockerfile for k8s testing (#3)

Adds a Dockerfile to help with testing on k8s.

Author: jshahriddhi

Dockerfile

@@ -0,0 +1,28 @@
+# Dockerfile to build a docker image for containarized platforms.
+# The Docker image has:
+#  - consul-dataplane CLI
+#  - envoy binary
+#  - [to-be-included] go-discover CLI
+
+FROM envoyproxy/envoy:v1.23-latest as envoy-binary
+
+FROM golang:1.18-alpine as consul-dataplane-binary
+WORKDIR /cdp
+# TODO: Directly go install the consul-dataplane CLI once repo is public
+COPY cmd ./cmd
+COPY pkg ./pkg
+COPY internal ./internal
+COPY go.mod ./
+COPY go.sum ./
+RUN go mod download
+RUN go build ./cmd/consul-dataplane
+# TODO (NET-722): Add go-discover to the docker image once PR
+# to fix depencencies is merged. (https://github.com/hashicorp/go-discover/pull/202)
+# RUN go get -u github.com/hashicorp/go-discover/cmd/discover
+
+FROM alpine:3.16 as consul-dataplane-container
+WORKDIR /root/
+RUN apk add gcompat
+COPY --from=consul-dataplane-binary /cdp/consul-dataplane ./
+COPY --from=envoy-binary /usr/local/bin/envoy /usr/local/bin/envoy
+ENTRYPOINT [ "./consul-dataplane" ]

Makefile

@@ -17,3 +17,16 @@ copy-bootstrap-config:
 		gofmt \
 		> $(BOOTSTRAP_PACKAGE_DIR)/$$file; \
 	done
+
+.PHONY: unit-tests
+unit-tests:
+	go test ./...
+
+# TODO: Install dependencies before running this target
+.PHONY: consul-proto
+consul-proto:
+	buf generate "https://github.com/hashicorp/consul.git#branch=main,subdir=proto-public"
+
+.PHONY: docker-build
+docker-build:
+	docker build --no-cache . -t consul-dataplane

README.md

@@ -0,0 +1,13 @@
+# Consul Dataplane
+
+## Development
+
+### Testing
+
+#### Unit Tests
+
+`make unit-tests`
+
+### Generate Go code from Consul proto
+
+`make consul-proto`