Use desktop build inside docker (#1350)

## Launch Checklist

This PR uses the maputnik CLI inside the docker container to allow
loading of files into the container and watch for changes.

 - [x] Briefly describe the changes in this PR.
 - [x] Write tests for all new functionality.
 - [x] Add an entry to `CHANGELOG.md` under the `## main` section.

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

desktop/Makefile

@@ -2,8 +2,7 @@ SOURCEDIR=.
 SOURCES := $(shell find $(SOURCEDIR) -name '*.go')
 BINARY=maputnik
 VERSION := $(shell node -p "require('../package.json').version")
-GOPATH := $(if $(GOPATH),$(GOPATH),$(HOME)/go)
-GOBIN := $(if $(GOBIN),$(GOBIN),$(HOME)/go/bin)
+GOBIN := $(or $(shell if [ -d /go/bin ]; then echo "/go/bin"; fi),$(HOME)/go/bin)
 
 all: $(BINARY)
 
@@ -11,6 +10,10 @@ $(BINARY): $(GOBIN)/gox $(GOBIN)/go-winres $(SOURCES) version.go rice-box.go win
 	$(GOBIN)/go-winres make --product-version=$(VERSION)
 	$(GOBIN)/gox -osarch "windows/amd64 linux/amd64 darwin/amd64" -output "bin/{{.OS}}/${BINARY}"
 
+bin/linux/$(BINARY): $(GOBIN)/gox $(GOBIN)/go-winres $(SOURCES) version.go rice-box.go winres/winres.json
+	$(GOBIN)/go-winres make --product-version=$(VERSION)
+	$(GOBIN)/gox -osarch "linux/amd64" -output "bin/{{.OS}}/${BINARY}"
+
 winres/winres.json: winres/winres_template.json
 	sed 's/{{.Version}}/$(VERSION)/g' winres/winres_template.json > $@
 

desktop/maputnik.go

@@ -5,8 +5,7 @@ import (
 	"net/http"
 	"os"
 	"path/filepath"
-
-        "github.com/GeertJohan/go.rice"
+    "github.com/GeertJohan/go.rice"
 	"github.com/gorilla/handlers"
 	"github.com/gorilla/mux"
 	"github.com/maputnik/desktop/filewatch"