Add TokenEndpoint to backend.json

- The tokenEndpoint provided here will be used to check the authenticity
  of the token

Dockerfile.alpine

@@ -6,7 +6,8 @@ RUN go get github.com/pstuifzand/ekster/cmd/eksterd
 # final stage
 FROM alpine
 RUN apk --no-cache add ca-certificates
-WORKDIR /app
+RUN ["mkdir", "-p", "/opt/micropub"]
+WORKDIR /opt/micropub
 EXPOSE 80
 COPY --from=build-env /go/bin/eksterd /app/
-ENTRYPOINT ./eksterd
+ENTRYPOINT ["/app/eksterd"]

cmd/eksterd/auth.go

@@ -70,7 +70,10 @@ func (h *microsubHandler) cachedCheckAuthToken(header string, r *TokenResponse)
 
 func (h *microsubHandler) checkAuthToken(header string, token *TokenResponse) bool {
 	log.Println("Checking auth token")
-	req, err := http.NewRequest("GET", "https://publog.stuifzandapp.com/authtoken", nil)
+
+	tokenEndpoint := h.Backend.(*memoryBackend).TokenEndpoint
+
+	req, err := http.NewRequest("GET", tokenEndpoint, nil)
 	if err != nil {
 		log.Println(err)
 		return false

cmd/eksterd/memory.go

@@ -35,10 +35,11 @@ import (
 )
 
 type memoryBackend struct {
-	Channels map[string]microsub.Channel
-	Feeds    map[string][]microsub.Feed
-	NextUid  int
-	Me       string
+	Channels      map[string]microsub.Channel
+	Feeds         map[string][]microsub.Feed
+	NextUid       int
+	Me            string
+	TokenEndpoint string
 
 	ticker *time.Ticker
 	quit   chan struct{}

docker-compose.yml

@@ -0,0 +1,17 @@
+version: '2'
+services:
+  redis:
+    image: "redis"
+
+  web:
+    image: "pstuifzand/eksterd:alpine"
+    working_dir: /opt/microsub
+    links:
+      - redis:redis
+    volumes:
+      - ./data:/opt/microsub
+    ports:
+      - 8090
+    environment:
+      - "FEEDBIN_USER="
+      - "FEEDBIN_PASS="