Fix and release a docker build

Dockerfile

@@ -1,11 +1,19 @@
-FROM golang:1.18
+# BUILD
+FROM golang:1.18-alpine3.17 AS build
 
-EXPOSE 8080
-WORKDIR /opt/app
-COPY go.* .
+WORKDIR /opt/src
+COPY go.* ./
 RUN go mod download
 
 COPY . .
 RUN go build .
 
+# Make the final image
+FROM alpine:latest
+
+EXPOSE 8080
+WORKDIR /opt/app
+COPY --from=build /opt/src/traefik-lazyload .
+COPY config.yaml .
+
 CMD ./traefik-lazyload

README.md

@@ -40,7 +40,8 @@ services:
 
   # Lazy-loader manager
   lazyloader:
-    build: .
+    #build: . # Uncomment to build from source
+    image: ghcr.io/zix99/traefik-lazyload:1
     labels:
       - traefik.enable=true
       - "traefik.http.routers.lazyload.priority=-100" # Lower router priority. Would only be hit if the app isn't running

assets.go

@@ -19,8 +19,6 @@ type SplashModel struct {
 	Hostname string
 }
 
-var splashTemplate = template.Must(template.ParseFS(httpAssets, path.Join("assets", config.Model.Splash)))
-
 type StatusPageModel struct {
 	Active         []*service.ContainerState
 	Qualifying     []containers.Wrapper
@@ -28,4 +26,14 @@ type StatusPageModel struct {
 	RuntimeMetrics string
 }
 
-var statusPageTemplate = template.Must(template.ParseFS(httpAssets, "assets/status.html"))
+type assetTemplates struct {
+	splash *template.Template
+	status *template.Template
+}
+
+func LoadTemplates() *assetTemplates {
+	return &assetTemplates{
+		splash: template.Must(template.ParseFS(httpAssets, path.Join("assets", config.Model.Splash))),
+		status: template.Must(template.ParseFS(httpAssets, "assets/status.html")),
+	}
+}

main.go

@@ -19,6 +19,7 @@ import (
 )
 
 type controller struct {
+	assets    assetTemplates
 	core      *service.Core
 	discovery *containers.Discovery
 }
@@ -55,6 +56,7 @@ func main() {
 	}
 
 	controller := controller{
+		*LoadTemplates(),
 		core,
 		discovery,
 	}
@@ -110,7 +112,7 @@ func (s *controller) ContainerHandler(w http.ResponseWriter, r *http.Request) {
 		}
 	} else {
 		w.WriteHeader(http.StatusAccepted)
-		renderErr := splashTemplate.Execute(w, SplashModel{
+		renderErr := s.assets.splash.Execute(w, SplashModel{
 			Hostname:       host,
 			ContainerState: sOpts,
 		})
@@ -129,7 +131,7 @@ func (s *controller) StatusHandler(w http.ResponseWriter, r *http.Request) {
 		qualifying, _ := s.discovery.QualifyingContainers(r.Context())
 		providers, _ := s.discovery.ProviderContainers(r.Context())
 
-		statusPageTemplate.Execute(w, StatusPageModel{
+		s.assets.status.Execute(w, StatusPageModel{
 			Active:         s.core.ActiveContainers(),
 			Qualifying:     qualifying,
 			Providers:      providers,