Fixed error with docker

Dockerfile

@@ -5,6 +5,7 @@ COPY ./cmd/*.go /music-server/cmd/
 COPY ./cmd/swagger /music-server/cmd/swagger
 COPY ./cmd/search /music-server/cmd/search
 COPY ./pkg /music-server/pkg/
+COPY ./db /music-server/db/
 
 #WORKDIR /music-server/
 #RUN go mod download