Move tools to a tools layer

Dockerfile

@@ -35,6 +35,12 @@ ARG BUILD=""
 # Build cli binary
 RUN make cli VERSION=$VERSION COMMIT=$COMMIT BUILD=$BUILD
 
+# Tools
+FROM golang:alpine AS tools
+
+RUN go install github.com/tdewolff/minify/v2/cmd/minify@latest
+RUN go install go.mills.io/static/cmd/static@latest
+
 # Runtime
 FROM alpine:latest
 
@@ -54,6 +60,8 @@ VOLUME /data
 WORKDIR /data
 
 COPY --from=build /src/zs /usr/local/bin/zs
+COPY --from=tools /go/bin/minify /usr/local/bin/minify
+COPY --from=tools /go/bin/static /usr/local/bin/static
 
 COPY .dockerfiles/entrypoint.sh /init
 

Makefile

@@ -28,8 +28,6 @@ preflight: ## Run preflight checks to ensure you have the right build tools
 	@./preflight.sh
 
 deps: ## Install any required dependencies
-	@$(GOCMD) install github.com/tdewolff/minify/v2/cmd/minify@latest
-	@$(GOCMD) install go.mills.io/static/cmd/static@latest
 
 dev : DEBUG=1
 dev : build ## Build debug version of zs (cli)