Adds a UI build in a Docker container. (hashicorp#2462)

GNUmakefile

@@ -59,6 +59,10 @@ vet:
 		echo "and fix them if necessary before submitting the code for reviewal."; \
 	fi
 
+# build the static web ui
+ui:
+	@sh -c "'$(CURDIR)/scripts/ui.sh'"
+
 # generates the static web ui that's compiled into the binary
 static-assets:
 	@echo "--> Generating static assets"
@@ -69,4 +73,4 @@ static-assets:
 tools:
 	go get -u -v $(GOTOOLS)
 
-.PHONY: all ci bin dev dist cov test cover format vet static-assets tools
+.PHONY: all ci bin dev dist cov test cover format vet ui static-assets tools

scripts/consul-builder/Dockerfile

@@ -27,4 +27,3 @@ ENV PATH $GOROOT/bin:$GOPATH/bin:$PATH
 
 RUN mkdir -p $GOPATH/src/github.com/hashicorp/consul
 WORKDIR $GOPATH/src/github.com/hashicorp/consul
-CMD ./scripts/dist_build.sh

scripts/dist.sh

@@ -28,7 +28,7 @@ fi
 # Do a hermetic build inside a Docker container.
 if [ -z $NOBUILD ]; then
     docker build -t hashicorp/consul-builder scripts/consul-builder/
-    docker run --rm -v "$(pwd)":/gopath/src/github.com/hashicorp/consul hashicorp/consul-builder
+    docker run --rm -v "$(pwd)":/gopath/src/github.com/hashicorp/consul hashicorp/consul-builder ./scripts/dist_build.sh
 fi
 
 # Zip all the files.

scripts/ui.sh

@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+set -e
+
+# Get the parent directory of where this script is.
+SOURCE="${BASH_SOURCE[0]}"
+while [ -h "$SOURCE" ] ; do SOURCE="$(readlink "$SOURCE")"; done
+DIR="$( cd -P "$( dirname "$SOURCE" )/.." && pwd )"
+
+# Change into that dir because we expect that.
+cd $DIR
+
+# Do a hermetic build inside a Docker container.
+if [ -z $NOBUILD ]; then
+    docker build -t hashicorp/consul-builder scripts/consul-builder/
+    docker run --rm -v "$(pwd)":/gopath/src/github.com/hashicorp/consul hashicorp/consul-builder ./scripts/ui_build.sh
+fi
+
+exit 0

scripts/ui_build.sh

@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+set -e
+
+# Get the parent directory of where this script is.
+SOURCE="${BASH_SOURCE[0]}"
+while [ -h "$SOURCE" ] ; do SOURCE="$(readlink "$SOURCE")"; done
+DIR="$( cd -P "$( dirname "$SOURCE" )/.." && pwd )"
+
+# Change into that dir because we expect that.
+cd $DIR
+
+# Build the web assets.
+pushd ui
+bundle
+make dist
+popd
+
+exit 0