Multistage docker build for powerstore (#70)

.gitignore

@@ -1,2 +1,4 @@
 vendor/
 cmd/*/bin/
+
+csm-common.mk

.golangci.yaml

@@ -1,6 +1,6 @@
 run:
   timeout: 20m
-  issue-exit-code: 0 # we will change this later
+  issues-exit-code: 0 # we will change this later
   tests: true
   skip-dirs-use-default: true
   modules-download-mode: readonly

Dockerfile

@@ -1,12 +1,28 @@
 ARG BASEIMAGE
 
+# Build the sdk binary
+FROM golang:1.21 as builder
+
+# Set envirment variable
+ENV APP_NAME csm-metrics-powerstore
+ENV CMD_PATH cmd/metrics-powerstore/main.go
+
+# Copy application data into image
+COPY . /go/src/$APP_NAME
+WORKDIR /go/src/$APP_NAME
+
+# Build the binary
+RUN go install github.com/golang/mock/[email protected]
+RUN go generate ./...
+RUN CGO_ENABLED=0 GOOS=linux go build -o /go/src/service /go/src/$APP_NAME/$CMD_PATH
+
+# Build the sdk image
 FROM $BASEIMAGE as final
 LABEL vendor="Dell Inc." \
       name="csm-metrics-powerstore" \
       summary="Dell Container Storage Modules (CSM) for Observability - Metrics for PowerStore" \
       description="Provides insight into storage usage and performance as it relates to the CSI (Container Storage Interface) Driver for Dell PowerStore" \
       version="2.0.0" \
       license="Apache-2.0"
-ARG SERVICE
-COPY $SERVICE/bin/service /service
+COPY --from=builder /go/src/service /
 ENTRYPOINT ["/service"]

Makefile

@@ -32,7 +32,7 @@ test:
 .PHONY: docker
 docker: download-csm-common
 	$(eval include csm-common.mk)
-	SERVICE=cmd/metrics-powerstore docker build -t csm-metrics-powerstore -f Dockerfile --build-arg BASEIMAGE=$(DEFAULT_BASEIMAGE) cmd/metrics-powerstore/
+	docker build -t csm-metrics-powerstore -f Dockerfile --build-arg BASEIMAGE=$(DEFAULT_BASEIMAGE) .
 
 .PHONY: push
 push:

README.md

@@ -55,7 +55,7 @@ Once all prerequisites are on the Linux host, follow the steps below to clone an
 
 1. Clone the repository using the following command: `git clone https://github.com/dell/csm-metrics-powerstore.git`
 1. Set the DOCKER_REPO environment variable to point to the local Docker repository, for example: `export DOCKER_REPO=<ip-address>:<port>`
-1. In the csm-metrics-powerstore directory, run the following command to build the Docker image called csm-metrics-powerstore: `make clean build docker`
+1. In the csm-metrics-powerstore directory, run the following command to build the Docker image called csm-metrics-powerstore: `make docker`
 1. Tag (with the "latest" tag) and push the image to the local Docker repository by running the following command: `make tag push`
 
 __Note:__ Linux support only. If you are using a local insecure docker registry, ensure you configure the insecure registries on each of the Kubernetes worker nodes to allow access to the local docker repository.