[Bug]: .dockerignore not parsed in the same was a Docker does it

[advdv]

Testcontainers version

v0.35.0

Using the latest Testcontainers version?

Yes

Host OS

MacOS

Host arch

ARM

Go version

1.23.3

Docker version

Client:
 Version:           27.4.0
 API version:       1.47
 Go version:        go1.22.10
 Git commit:        bde2b89
 Built:             Sat Dec  7 10:35:43 2024
 OS/Arch:           darwin/arm64
 Context:           desktop-linux

Server: Docker Desktop 4.37.2 (179585)
 Engine:
  Version:          27.4.0
  API version:      1.47 (minimum version 1.24)
  Go version:       go1.22.10
  Git commit:       92a8393
  Built:            Sat Dec  7 10:38:33 2024
  OS/Arch:          linux/arm64
  Experimental:     false
 containerd:
  Version:          1.7.21
  GitCommit:        472731909fa34bd7bc9c087e4c27943f9835f111
 runc:
  Version:          1.1.13
  GitCommit:        v1.1.13-0-g58aa920
 docker-init:
  Version:          0.19.0
  GitCommit:        de40ad0

Docker info

Client:
 Version:    27.4.0
 Context:    desktop-linux
 Debug Mode: false
 Plugins:
  ai: Ask Gordon - Docker Agent (Docker Inc.)
    Version:  v0.5.1
    Path:     /Users/adamvanderveer/.docker/cli-plugins/docker-ai
  buildx: Docker Buildx (Docker Inc.)
    Version:  v0.19.2-desktop.1
    Path:     /Users/adamvanderveer/.docker/cli-plugins/docker-buildx
  compose: Docker Compose (Docker Inc.)
    Version:  v2.31.0-desktop.2
    Path:     /Users/adamvanderveer/.docker/cli-plugins/docker-compose
  debug: Get a shell into any image or container (Docker Inc.)
    Version:  0.0.37
    Path:     /Users/adamvanderveer/.docker/cli-plugins/docker-debug
  desktop: Docker Desktop commands (Beta) (Docker Inc.)
    Version:  v0.1.0
    Path:     /Users/adamvanderveer/.docker/cli-plugins/docker-desktop
  dev: Docker Dev Environments (Docker Inc.)
    Version:  v0.1.2
    Path:     /Users/adamvanderveer/.docker/cli-plugins/docker-dev
  extension: Manages Docker extensions (Docker Inc.)
    Version:  v0.2.27
    Path:     /Users/adamvanderveer/.docker/cli-plugins/docker-extension
  feedback: Provide feedback, right in your terminal! (Docker Inc.)
    Version:  v1.0.5
    Path:     /Users/adamvanderveer/.docker/cli-plugins/docker-feedback
  init: Creates Docker-related starter files for your project (Docker Inc.)
    Version:  v1.4.0
    Path:     /Users/adamvanderveer/.docker/cli-plugins/docker-init
  sbom: View the packaged-based Software Bill Of Materials (SBOM) for an image (Anchore Inc.)
    Version:  0.6.0
    Path:     /Users/adamvanderveer/.docker/cli-plugins/docker-sbom
  scout: Docker Scout (Docker Inc.)
    Version:  v1.15.1
    Path:     /Users/adamvanderveer/.docker/cli-plugins/docker-scout

Server:
 Containers: 7
  Running: 6
  Paused: 0
  Stopped: 1
 Images: 31
 Server Version: 27.4.0
 Storage Driver: overlayfs
  driver-type: io.containerd.snapshotter.v1
 Logging Driver: json-file
 Cgroup Driver: cgroupfs
 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: 472731909fa34bd7bc9c087e4c27943f9835f111
 runc version: v1.1.13-0-g58aa920
 init version: de40ad0
 Security Options:
  seccomp
   Profile: unconfined
  cgroupns
 Kernel Version: 6.10.14-linuxkit
 Operating System: Docker Desktop
 OSType: linux
 Architecture: aarch64
 CPUs: 8
 Total Memory: 15.35GiB
 Name: docker-desktop
 ID: 05f8db2c-6916-4cf0-b524-f7c8001c6c5f
 Docker Root Dir: /var/lib/docker
 Debug Mode: false
 HTTP Proxy: http.docker.internal:3128
 HTTPS Proxy: http.docker.internal:3128
 No Proxy: hubproxy.docker.internal
 Labels:
  com.docker.desktop.address=unix:///Users/<REDACTED>/Library/Containers/com.docker.docker/Data/docker-cli.sock
 Experimental: false
 Insecure Registries:
  hubproxy.docker.internal:5555
  127.0.0.0/8
 Live Restore Enabled: false

WARNING: daemon is not using the default seccomp profile

What happened?

I'm trying to use the build feature to build docker images for my tests on-the-fly. For this there is a dockerginore file that looks like this:

*
!lambda/**/*.go
!proto/**/*.go
!go.mod
!go.sum

There is a "main.go" in lambda/describedocument/cmd/main.go (content doesn't matter, could be simple hello world)

I have a Dockerfile that looks like this:

# Stage 1: Modules caching
FROM golang:1.23 AS modules
COPY go.mod go.sum /modules/
WORKDIR /modules
RUN go mod download

# Stage 2: Build our application code
FROM golang:1.23 AS builder
COPY --from=modules /go/pkg /go/pkg
COPY . /workdir
WORKDIR /workdir
RUN CGO_ENABLED=0  go build -o /bin/describedocument ./lambda/describedocument/cmd

# Stage 3: Final assembly
FROM gcr.io/distroless/static-debian12 AS describedocument
COPY --from=builder /bin/describedocument /
ENTRYPOINT ["/describedocument"]

I have a docker compose file that looks like this:

services:
  describedocument:
    platform: linux/amd64
    build:
      context: .
      dockerfile: lambda/describedocument/Dockerfile
      target: describedocument
    ports:
      - "8584:8080"
    volumes:
      - ./magefiles/aws-lambda-rie/aws-lambda-rie:/aws-lambda-rie
      - $HOME/.aws/credentials:/root/.aws/credentials:ro
    entrypoint: /aws-lambda-rie /describedocument

When i let docker compose build the docker image, it works. But when i let testcontainers-go build it, it will say in the build logs:

 ---> Running in d121e0b7b558
stat /workdir/lambda/describedocument/cmd: directory not found
 ---> Removed intermediate container d121e0b7b558
    e2e_test.go:21:
                Error Trace:    /Users/adamvanderveer/Documents/Projects/github.com/crewlinker/openai/e2e_test.go:95
                                                        /Users/adamvanderveer/Documents/Projects/github.com/crewlinker/openai/e2e_test.go:21
                Error:          Received unexpected error:
                                create container: build image: The command '/bin/sh -c CGO_ENABLED=0  go build -o /bin/describedocument ./lambda/describedocument/cmd' returned a non-zero code: 1
                Test:           TestSmoke
--- FAIL: TestSmoke (0.35s)

When i double check this, the directory ./lambda/describedocument is indeed empty when building it with testcontainers. IF i change my dockerignore to look like this (and change nothing else):

*
!lambda/**/*.go
!lambda/describedocument/**/*.go
!lambda/describedocument/cmd/*.go
!proto/**/*.go
!go.mod
!go.sum

Test containers will build it correctly. So there is a difference between Docker and Testcontainers in how **/*.go is interpreted.

For completeness, this is how i'm testing it in Go:

package openai_test

import (
	"context"
	"fmt"
	"os"
	"path/filepath"
	"testing"
	"time"

	"github.com/advdv/stdgo/stdlo"
	"github.com/carlmjohnson/requests"
	"github.com/docker/docker/api/types"
	"github.com/docker/go-connections/nat"
	"github.com/stretchr/testify/require"
	"github.com/testcontainers/testcontainers-go"
	"github.com/testcontainers/testcontainers-go/wait"
)

func TestSmoke(t *testing.T) {
	ctx, req := setup(t)

	require.NoError(t, req.BodyBytes([]byte(`{}`)).Post().Fetch(ctx))

	_ = ctx
	_ = req
}

type testLogConsumer struct{ testing.TB }

func (lc *testLogConsumer) Accept(l testcontainers.Log) {
	lc.Logf("%s: %s", l.LogType, l.Content)
}

func setup(t *testing.T) (context.Context, *requests.Builder) {
	t.Helper()
	t.Parallel()

	ctx, cancel := context.WithCancel(context.Background())
	t.Cleanup(cancel)

	wdir, hdir := stdlo.Must1(os.Getwd()), stdlo.Must1(os.UserHomeDir())

	logConsumer := &testLogConsumer{t}

	cwd, err := os.Getwd()
	require.NoError(t, err)

	fmt.Println(cwd)

	container, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{
		ContainerRequest: testcontainers.ContainerRequest{
			FromDockerfile: testcontainers.FromDockerfile{
				Context:        cwd,
				Dockerfile:     filepath.Join("lambda", "describedocument", "Dockerfile"),
				BuildLogWriter: os.Stderr,
				BuildOptionsModifier: func(ibo *types.ImageBuildOptions) {
					// ibo.Platform = "linux/amd64"
					ibo.Dockerfile = filepath.Join("lambda", "describedocument", "Dockerfile")
					ibo.Target = "describedocument"
				},
			},
			// Image:        "openai-describedocument", // must be build beforehand, easiest is to run mage -v dev:serve at least once
			ExposedPorts: []string{"8080/tcp"},
			Files: []testcontainers.ContainerFile{
				{
					HostFilePath:      stdlo.Must1(filepath.Abs(filepath.Join(wdir, "magefiles", "aws-lambda-rie", "aws-lambda-rie"))),
					ContainerFilePath: "/aws-lambda-rie",
					FileMode:          0o7777,
				},
				{
					HostFilePath:      stdlo.Must1(filepath.Abs(filepath.Join(hdir, ".aws", "credentials"))),
					ContainerFilePath: "/root/.aws/credentials",
					FileMode:          0o7777,
				},
			},
			Env: map[string]string{
				"AWS_REGION":  "eu-central-1",
				"AWS_PROFILE": "cl-ats",
			},
			Entrypoint: []string{"/aws-lambda-rie", "/describedocument"},
			WaitingFor: wait.ForAll(
				wait.ForLog("[INFO] (rapid) exec"),
				wait.ForListeningPort(nat.Port("8080/tcp")).SkipInternalCheck(),
			),
			LogConsumerCfg: &testcontainers.LogConsumerConfig{
				Opts:      []testcontainers.LogProductionOption{testcontainers.WithLogProductionTimeout(10 * time.Second)},
				Consumers: []testcontainers.LogConsumer{logConsumer},
			},
		},
		Started: true,
	})

	testcontainers.CleanupContainer(t, container)
	require.NoError(t, err)

	ep, err := container.Endpoint(ctx, "")
	require.NoError(t, err)

	return ctx, requests.URL("http://" + ep + "/2015-03-31/functions/function/invocations").Post()
}

Relevant log output

Additional information

No response