Update tools included in container (#20)

* Remove 'unused' tool, which is now in staticcheck

* Remove obsolete govendor and glide

* Remove some obsolete tools, stop using gometalinter install

Author: rfay

Dockerfile

@@ -13,7 +13,6 @@ RUN curl -sSL "https://github.com/gotestyourself/gotestsum/releases/download/v$G
 # https://dominik.honnef.co/posts/2014/12/go-tools/#goreturns
 
 ENV GOTOOLSTOBUILD \
-        github.com/3rf/codecoroner \
         github.com/FiloSottile/vendorcheck \
         github.com/GoASTScanner/gas \
         github.com/alecthomas/gocyclo \
@@ -22,9 +21,7 @@ ENV GOTOOLSTOBUILD \
         github.com/golang/lint/golint \
         github.com/gordonklaus/ineffassign \
         github.com/jgautheron/goconst \
-        github.com/kardianos/govendor \
         github.com/golang/dep/cmd/dep \
-        github.com/Masterminds/glide \
         github.com/kisielk/errcheck \
         github.com/mdempsky/unconvert \
         github.com/mibk/dupl \
@@ -38,9 +35,8 @@ ENV GOTOOLSTOBUILD \
         github.com/tsenart/deadcode \
         github.com/walle/lll \
         golang.org/x/tools/cmd/goimports \
-        honnef.co/go/tools/cmd/gosimple \
         honnef.co/go/tools/cmd/staticcheck \
-        honnef.co/go/tools/cmd/unused
+        github.com/client9/misspell/cmd/misspell
 
 RUN echo "GOTOOLSTOBUILD=$GOTOOLSTOBUILD"
 
@@ -49,8 +45,6 @@ RUN for item in $GOTOOLSTOBUILD; do \
 	go get -u $item; \
 done
 
-RUN gometalinter --install
-
 # /go/bin will be mounted on top, so get everything into /usr/local/bin
 RUN cp -r /go/bin/* /usr/local/bin