Compose v2 rc1 warns on mandatory variables instead of throwing an error #8510
Description
Description
Docker Compose v2 defaults mandatory variables to blank string and shows a warning instead of throwing an error.
Steps to reproduce the issue:
- setup a
docker-compose.ymlfile with an mandatory variable requirement${DB_PASSWORD:?err}according to https://docs.docker.com/compose/compose-file/compose-file-v3/#variable-substitution docker compose up
Describe the results you received:
$ docker compose up
WARN[0000] The "DB_USERNAME" variable is not set. Defaulting to a blank string.
WARN[0000] The "DB_PASSWORD" variable is not set. Defaulting to a blank string.
Describe the results you expected:
This is what happens when I run the v1.29 version on the same machine (note docker-compose vs docker compose in the commands).
$ docker-compose up
ERROR: Missing mandatory value for "environment" option interpolating {'MONGO_INITDB_ROOT_USERNAME': '${DB_USERNAME:?DB_USERNAME_NOT_SET}', 'MONGO_INITDB_ROOT_PASSWORD': '${DB_PASSWORD:?DB_PASSWORD_NOT_SET}', 'MONGO_INITDB_DATABASE': 'compose-v2-testcase'} in service "mongodb": DB_USERNAME_NOT_SET
Output of docker-compose --version:
$ docker compose version
Docker Compose version v2.0.0-rc.1
Works in
$ docker-compose version
docker-compose version 1.29.2, build 5becea4c
docker-py version: 5.0.0
CPython version: 3.7.10
OpenSSL version: OpenSSL 1.1.0l 10 Sep 2019
Output of docker version:
$ docker version
Client: Docker Engine - Community
Cloud integration: 1.0.17
Version: 20.10.8
API version: 1.41
Go version: go1.16.6
Git commit: 3967b7d
Built: Fri Jul 30 19:54:02 2021
OS/Arch: linux/amd64
Context: default
Experimental: true
Server: Docker Engine - Community
Engine:
Version: 20.10.8
API version: 1.41 (minimum version 1.12)
Go version: go1.16.6
Git commit: 75249d8
Built: Fri Jul 30 19:52:10 2021
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: 1.4.9
GitCommit: e25210fe30a0a703442421b0f60afac609f950a3
runc:
Version: 1.0.1
GitCommit: v1.0.1-0-g4144b63
docker-init:
Version: 0.19.0
GitCommit: de40ad0
Output of docker context show:
You can also run docker context inspect context-name to give us more details but don't forget to remove sensitive content.
$ docker context show
default
Output of docker info:
$ docker info
Client:
Context: default
Debug Mode: false
Plugins:
buildx: Build with BuildKit (Docker Inc., v0.6.1-docker)
compose: Docker Compose (Docker Inc., v2.0.0-rc.1)
scan: Docker Scan (Docker Inc., v0.8.0)
Server:
Containers: 0
Running: 0
Paused: 0
Stopped: 0
Images: 2
Server Version: 20.10.8
Storage Driver: overlay2
Backing Filesystem: extfs
Supports d_type: true
Native Overlay Diff: true
userxattr: false
Logging Driver: json-file
Cgroup Driver: cgroupfs
Cgroup Version: 1
Plugins:
Volume: local
Network: bridge host ipvlan macvlan null overlay
Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
Swarm: inactive
Runtimes: io.containerd.runc.v2 io.containerd.runtime.v1.linux runc
Default Runtime: runc
Init Binary: docker-init
containerd version: e25210fe30a0a703442421b0f60afac609f950a3
runc version: v1.0.1-0-g4144b63
init version: de40ad0
Security Options:
seccomp
Profile: default
Kernel Version: 5.4.72-microsoft-standard-WSL2
Operating System: Docker Desktop
OSType: linux
Architecture: x86_64
CPUs: 12
Total Memory: 12.45GiB
Name: docker-desktop
ID: PIEA:WZLY:JSME:QHUA:3FLO:MJEV:5Y5A:KS4L:RYZZ:C7YG:UQWS:RED2
Docker Root Dir: /var/lib/docker
Debug Mode: false
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: false
WARNING: No blkio throttle.read_bps_device support
WARNING: No blkio throttle.write_bps_device support
WARNING: No blkio throttle.read_iops_device support
WARNING: No blkio throttle.write_iops_device support
Additional environment details (AWS ECS, Azure ACI, local, etc.):
Running inside WSL2