Local develop setup with docker (#1103)

* Add local live kit backend run setup

backend/auth/Dockerfile

@@ -0,0 +1,15 @@
+FROM golang:1.20-alpine
+
+WORKDIR /app
+
+COPY go.mod ./
+COPY go.sum ./
+RUN go mod download
+
+COPY *.go ./
+
+RUN go build -o /auth-server
+
+EXPOSE 8080
+
+CMD [ "/auth-server" ]