fix: build migrator dockerfile

Author: javascriptizer1

service/auth/Dockerfile

@@ -15,7 +15,7 @@ RUN go build -o app/main service/auth/cmd/app/main.go
 
 
 # runtime stage
-FROM alpine:3.20 as runtime
+FROM scratch as runtime
 
 WORKDIR /opt/service/auth
 

service/auth/migration.Dockerfile

@@ -10,4 +10,5 @@ WORKDIR /opt
 COPY service/auth/migrations ./migrations
 
 ENV GOOSE_DBSTRING=postgresql://${POSTGRES_USER}:${POSTGRES_PASSWORD}@${POSTGRES_HOST}:${POSTGRES_PORT}/${POSTGRES_DB}?sslmode=disable
-RUN /bin/goose -dir ./migrations/postgres postgres up
+
+ENTRYPOINT ["/bin/sh", "-c", "/bin/goose -dir ./migrations/postgres postgres up"]