Dockerfile: reuse make, drop upx

upx is nice, but not necessary for this and duplicating Makefile is just not
good.

Note that in absence of vendoring building this can be problematic at the
moment because of private repository dependency, it'll be solved in future.

Dockerfile

@@ -4,36 +4,20 @@ WORKDIR /src
 
 RUN set -x \
     && apt update \
-    && apt install -y upx-ucl
+    && apt install -y make
 
 COPY . /src
 
 ARG VERSION=dev
 
-# https://github.com/golang/go/wiki/Modules#how-do-i-use-vendoring-with-modules-is-vendoring-going-away
-# go build -mod=vendor
-# The -gcflags "all=-N -l" flag helps us get a better debug experience
-RUN set -x \
-    && export BUILD=$(date -u +%s%N) \
-    && export REPO=$(go list -m) \
-    && export LDFLAGS="-X ${REPO}/misc.Version=${VERSION} -X ${REPO}/misc.Build=${BUILD}" \
-    && export GOGC=off \
-    && export CGO_ENABLED=0 \
-    && [ -d "./vendor" ] || go mod vendor \
-    && go build \
-      -v \
-      -mod=vendor \
-      -trimpath \
-      -ldflags "${LDFLAGS}" \
-      -o /go/bin/neofs-s3 ./cmd/gate \
-    && upx -3 /go/bin/neofs-s3
+RUN make
 
 # Executable image
 FROM scratch
 
 WORKDIR /
 
-COPY --from=builder /go/bin/neofs-s3 /bin/neofs-s3
+COPY --from=builder /src/bin/neofs-s3-gw /bin/neofs-s3-gw
 COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
 
-ENTRYPOINT ["/bin/neofs-s3"]
+ENTRYPOINT ["/bin/neofs-s3-gw"]