install rice during docker build

Dockerfile

@@ -20,7 +20,7 @@ RUN go mod download
 
 COPY ./ ./
 #RUN make lint
-RUN make httpd
+RUN make rice-install && make httpd
 RUN go mod vendor
 RUN tar -c . | bzip2 > /src.tbz2
 

Makefile

@@ -48,7 +48,9 @@ docker:
 		cd ../.. && \
 		rice append -i ./httpserver --exec ./httpd
 
-tools:
+tools: rice-install
 	go get -v github.com/golangci/golangci-lint/cmd/golangci-lint@v1.31.0
 	go get -v mvdan.cc/gofumpt/gofumports
+
+rice-install:
 	go get -v github.com/GeertJohan/go.rice/rice