modernize build, set user-agent header for forum listing

Author: ccbrown

.dockerignore

@@ -2,4 +2,4 @@
 !*.go
 !server/*
 !go.mod
-!go.lock
+!go.sum

Dockerfile

@@ -2,10 +2,7 @@ FROM golang:1.20-alpine
 
 WORKDIR /go/src/github.com/ccbrown/gggtracker
 
-RUN apk add --no-cache git g++
-
 ADD . .
-RUN go generate ./...
 RUN go vet .
 RUN go test -v ./... 
 RUN go build .

README.md

@@ -4,7 +4,7 @@ This is the repository for [gggtracker.com](https://gggtracker.com). If there's
 
 ### Development
 
-If you have Go installed, you can develop and run the server in the usual way: `go get ./... && go generate ./... && go run main.go`
+If you have Go installed, you can develop and run the server in the usual way: `go run main.go`
 
 ![Development](development.gif)
 

server/localization.go

@@ -56,12 +56,23 @@ func (l *Locale) RefreshForumIds() error {
 	client := http.Client{
 		Timeout: time.Second * 10,
 	}
-	resp, err := client.Get(fmt.Sprintf("https://%v/forum", l.ForumHost()))
+
+	req, err := http.NewRequest("GET", fmt.Sprintf("https://%v/forum", l.ForumHost()), nil)
+	if err != nil {
+		return err
+	}
+	req.Header.Set("User-Agent", UserAgent)
+
+	resp, err := client.Do(req)
 	if err != nil {
 		return err
 	}
 	defer resp.Body.Close()
 
+	if resp.StatusCode != http.StatusOK {
+		return fmt.Errorf("unexpected status code: %v", resp.StatusCode)
+	}
+
 	doc, err := goquery.NewDocumentFromReader(resp.Body)
 	if err != nil {
 		return err