Forward-port release-alpha8 build script issues (#1726)

* releases: update alpha dockerfiles to embed release tags

Change-Id: I2978d3ed77d1b768be24ec9194bc404cd92e4700

* release script use plain shell

Change-Id: Ie4ca6633014e3bf00ac0c82e28905174a6ade95b

* removed /scripts from .dockerignore

Change-Id: Ib555236d62fb3dc354689284ac4a032d5b4b3aa8

* switch back to bash

Change-Id: Ie0958cde71cd396f44ac28c177f48df0bea7ba22

* fix go1.12 modules

Change-Id: If4c8364e7271f09febd1a6c8bfc731d723d344d9

* make sure the work tree is clean

Change-Id: Ie6e52af28e2bc52880d92a3b574d1f859fc8e88e

.dockerignore

@@ -1,3 +1,2 @@
 /*.swp
-/scripts
 docker-compose.yaml

cmd/storagenode/alpha/amd64.Dockerfile

@@ -1,15 +1,17 @@
 # build
-FROM golang:1.11-alpine as build-env
+FROM golang:1.12-alpine as build-env
 
 ENV CGO_ENABLED=1
+ENV GO111MODULE=on
 
 ADD . /go/src/storj.io/storj
 WORKDIR /go/src/storj.io/storj/cmd/storagenode
 
 # dependencies + binary
-RUN apk add git gcc musl-dev
-#RUN unset GOPATH && go mod vendor
-RUN go build -a -installsuffix cgo -o storagenode .
+RUN apk add git gcc musl-dev bash
+RUN git reset --hard
+RUN git clean -dffx
+RUN ../../scripts/release.sh build -a -installsuffix cgo -o storagenode .
 RUN mkdir config identity
 
 # final stage

scripts/release.sh

@@ -1,13 +1,13 @@
 #!/usr/bin/env bash
 
- set -eu
+set -eu
 set -o pipefail
 
- echo -n "Build timestamp: "
+echo -n "Build timestamp: "
 TIMESTAMP=$(date +%s)
 echo $TIMESTAMP
 
- echo -n "Git commit: "
+echo -n "Git commit: "
 if [[ "$(git diff --stat)" != '' ]] || [[ -n "$(git status -s)" ]]; then
   COMMIT=$(git rev-parse HEAD)-dirty
   RELEASE=false
@@ -17,11 +17,11 @@ else
 fi
 echo $COMMIT
 
- echo -n "Tagged version: "
+echo -n "Tagged version: "
 VERSION=$(git describe --tags --exact-match --match "v[0-9]*.[0-9]*.[0-9]*")
 echo $VERSION
 
- echo Running "go $@"
+echo Running "go $@"
 exec go "$1" -ldflags \
 	"-X storj.io/storj/internal/version.buildTimestamp=$TIMESTAMP
          -X storj.io/storj/internal/version.buildCommitHash=$COMMIT