Description
Containers printing logs on shutdown don't get displayed.
Steps To Reproduce
Example code
package main
import (
"fmt"
"os"
"os/signal"
"syscall"
)
func main() {
sigChan := make(chan os.Signal, 1)
signal.Notify(sigChan, syscall.SIGINT, syscall.SIGTERM)
fmt.Println("Hello, World!")
<-sigChan
fmt.Println("Goodbye, World!")
}Example Dockerfile
FROM golang:alpine
WORKDIR /app
COPY . .
RUN go build -o hello .
CMD ["./hello"]
Example compose.yml
services:
hello:
build: .
-
Run docker compose up --build.
-
Press CTRL + C to gracefully shutdown all the services.
-
Notice how you won't see the "Goodbye, World!" log but if you run docker compose logs hello, you'll see the log.
Compose Version
Docker Compose version v2.36.2
Docker Environment
Client: Docker Engine - Community
Version: 28.2.2
Context: default
Debug Mode: false
Plugins:
buildx: Docker Buildx (Docker Inc.)
Version: v0.24.0
Path: /usr/libexec/docker/cli-plugins/docker-buildx
compose: Docker Compose (Docker Inc.)
Version: v2.36.2
Path: /usr/libexec/docker/cli-plugins/docker-compose
Server:
Containers: 25
Running: 0
Paused: 0
Stopped: 25
Images: 73
Server Version: 28.2.2
Storage Driver: overlay2
Backing Filesystem: btrfs
Supports d_type: true
Using metacopy: false
Native Overlay Diff: true
userxattr: false
Logging Driver: json-file
Cgroup Driver: systemd
Cgroup Version: 2
Plugins:
Volume: local
Network: bridge host ipvlan macvlan null overlay
Log: awslogs fluentd gcplogs gelf journald json-file local splunk syslog
CDI spec directories:
/etc/cdi
/var/run/cdi
Swarm: inactive
Runtimes: io.containerd.runc.v2 runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 05044ec0a9a75232cad458027ca83437aae3f4da
runc version: v1.2.5-0-g59923ef
init version: de40ad0
Security Options:
seccomp
Profile: builtin
cgroupns
Kernel Version: 6.14.9-300.fc42.x86_64
Operating System: Fedora Linux 42 (Workstation Edition)
OSType: linux
Architecture: x86_64
CPUs: 12
Total Memory: 31.26GiB
Name: nzxt-pc
ID: 243ae51b-a1fb-4b73-a42d-ef8cb1420620
Docker Root Dir: /var/lib/docker
Debug Mode: false
Experimental: false
Insecure Registries:
::1/128
127.0.0.0/8
Live Restore Enabled: false
Anything else?
I assume it's just detaching too early, causing it not to print the logs, but I don't know if this is intended behavior. To me, this seems like it should print the logs on shutdown.
Description
Containers printing logs on shutdown don't get displayed.
Steps To Reproduce
Example code
Example Dockerfile
Example compose.yml
Run
docker compose up --build.Press CTRL + C to gracefully shutdown all the services.
Notice how you won't see the "Goodbye, World!" log but if you run
docker compose logs hello, you'll see the log.Compose Version
Docker Environment
Anything else?
I assume it's just detaching too early, causing it not to print the logs, but I don't know if this is intended behavior. To me, this seems like it should print the logs on shutdown.