[#570] Fix docker image builds

- Moving to Alpine as a base image
- Fix dirty image build
- Fix version format to match neofs-node

Signed-off-by: Stanislav Bogatyrev <stanislav@nspcc.ru>

.docker/Dockerfile

@@ -1,25 +1,21 @@
-FROM golang:1 as builder
-
-WORKDIR /src
-
-RUN set -x \
-    && apt update \
-    && apt install -y make
-
-COPY . /src
+FROM golang:1.17 as builder
 
+ARG BUILD=now
 ARG REPO=github.com/nspcc-dev/neofs-s3-gw
 ARG VERSION=dev
 
-RUN set -x && make -o dep # run make without dep dependency
+WORKDIR /src
+COPY . /src
+
+RUN make
 
 # Executable image
-FROM scratch
+FROM alpine AS neofs-s3-gw
+RUN apk add --no-cache bash ca-certificates
 
 WORKDIR /
 
 COPY --from=builder /src/bin/neofs-s3-gw /bin/neofs-s3-gw
 COPY --from=builder /src/bin/neofs-s3-authmate /bin/neofs-s3-authmate
-COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
 
 ENTRYPOINT ["/bin/neofs-s3-gw"]

.docker/Dockerfile.dirty

@@ -0,0 +1,9 @@
+FROM alpine AS neofs-s3-gw
+RUN apk add --no-cache bash ca-certificates
+
+WORKDIR /
+
+COPY /bin/neofs-s3-gw /bin/neofs-s3-gw
+COPY /bin/neofs-s3-authmate /bin/neofs-s3-authmate
+
+ENTRYPOINT ["/bin/neofs-s3-gw"]

Makefile

@@ -2,7 +2,7 @@
 
 # Common variables
 REPO ?= $(shell go list -m)
-VERSION ?= $(shell git describe --tags 2>/dev/null || cat VERSION 2>/dev/null || echo "develop")
+VERSION ?= $(shell git describe --tags --dirty --always 2>/dev/null || cat VERSION 2>/dev/null || echo "develop")
 GO_VERSION ?= 1.17
 LINT_VERSION ?= 1.46.2
 BINDIR = bin
@@ -67,13 +67,13 @@ format:
 	@gofmt -s -w ./
 
 # Build clean Docker image
-image: dep
+image:
 	@echo "⇒ Build NeoFS S3 Gateway docker image "
 	@docker build \
 		--build-arg REPO=$(REPO) \
 		--build-arg VERSION=$(VERSION) \
 		--rm \
-		-f Dockerfile \
+		-f .docker/Dockerfile \
 		-t $(HUB_IMAGE):$(HUB_TAG) .
 
 # Push Docker image to the hub
@@ -88,7 +88,7 @@ dirty-image:
 		--build-arg REPO=$(REPO) \
 		--build-arg VERSION=$(VERSION) \
 		--rm \
-		-f Dockerfile.dirty \
+		-f .docker/Dockerfile.dirty \
 		-t $(HUB_IMAGE)-dirty:$(HUB_TAG) .
 
 # Run linters