fix(docker): add dockfile and small fixes (#38)

* fix(docker): add dockfile and small fixes

* chore(readme): small fixes

scripts/build_be_docker.sh

@@ -0,0 +1,11 @@
+export QSROOT=`pwd`
+rm -r dist && mkdir dist
+
+# set this for builders behind GFW...
+go env -w GOPROXY=https://goproxy.cn,direct
+go get -d -v ./...
+go get github.com/mitchellh/gox
+cd cmd/start
+gox \
+    -osarch="linux/amd64" \
+    -output "$QSROOT/dist/quickshare/start"

scripts/docker_run.sh

@@ -0,0 +1,7 @@
+docker run \
+    --name quickshare \
+    -d -p :8686:8686 \
+    -v `pwd`/quickshare/root:/quickshare/root \
+    -e DEFAULTADMIN=qs \
+    -e DEFAULTADMINPWD=1234 \
+    hexxa/quickshare:0.3.0