Added a monday docker image

Dockerfile

@@ -0,0 +1,23 @@
+FROM golang:1.13-alpine3.10 as builder
+
+ARG Version
+
+RUN apk --no-cache add git && \
+    apk --update add alpine-sdk && \
+    rm -rf /var/cache/apk/*
+
+WORKDIR /sources
+COPY . .
+
+RUN CGO_ENABLED=0 GOOS=linux go build -mod vendor -ldflags "-X main.Version=sources-$Version -s -w" -o monday /sources/cmd
+
+FROM alpine:3.10
+
+LABEL name="monday"
+LABEL description="A dev tool for microservice developers to run local applications and/or forward others from/to Kubernetes SSH or TCP"
+
+WORKDIR /
+
+COPY --from=builder /sources/monday monday
+
+ENTRYPOINT ["/monday"]

Makefile

@@ -9,6 +9,9 @@ build: ## Builds a local version of Monday from sources
 build-binary: ## Builds a single binary of Monday from sources
 	/usr/local/bin/go build -ldflags "-X main.Version=sources-$(shell git rev-parse --short=5 HEAD)" -o monday ./cmd
 
+docker-build: ## Builds a docker image of Monday from sources
+	docker build -t monday --build-arg Version=$(shell git rev-parse --short=5 HEAD) .
+
 generate-mocks: ## Generate mocks for tests
 	@echo "> generating mocks..."