Go Docker Container Images

Table of Contents

• Docker Images
  • -dev
  • -dev-macos
  • Supported architectures
• Environment Variables
• Build arguments
• Tools
• Changelog
• Crond
• SSHD
• Adding SSH key
• Complete Go stack
• Orchestration Actions

Docker Images

For better reliability we release images with stability tags (wodby/go:1.26-X.X.X) which correspond to git tags. We strongly recommend using images only with stability tags.

About images:

• All images are based on Alpine Linux
• Base image: golang
• GitHub actions builds
• Docker Hub

Supported tags and respective Dockerfile links:

• 1.26, 1, latest (Dockerfile)
• 1.25 (Dockerfile)
• 1.26-dev, 1-dev, dev (Dockerfile)
• 1.25-dev (Dockerfile)
• 1.26-dev-macos, 1-dev-macos (Dockerfile)
• 1.25-dev-macos (Dockerfile)

-dev

Images with -dev tag have sudo allowed for all commands for the wodby user and include build dependencies for cgo-based projects.

-dev-macos

Same as -dev but the default user/group wodby has uid/gid 501/20 to match the macOS default user/group ids.

Supported architectures

All images are built for linux/amd64, -dev-macos images are additionally built for linux/arm64.

Environment Variables

Variable	Default value
APP_ROOT	/usr/src/app
FILES_DIR	/mnt/files
GIT_USER_EMAIL	wodby@example.com
GIT_USER_NAME	wodby
GOCACHE	/home/wodby/.cache/go-build
GOMODCACHE	/home/wodby/go/pkg/mod
GOPATH	/home/wodby/go
SSH_DISABLE_STRICT_KEY_CHECKING
SSH_PRIVATE_KEY
SSHD_GATEWAY_PORTS	no
SSHD_HOST_KEYS_DIR	/etc/ssh
SSHD_LOG_LEVEL	INFO
SSHD_PASSWORD_AUTHENTICATION	no
SSHD_PERMIT_USER_ENV	no
SSHD_USE_DNS	yes

Build arguments

Argument	Default value
GO_DEV
WODBY_GROUP_ID	1000
WODBY_USER_ID	1000

Change WODBY_USER_ID and WODBY_GROUP_ID mainly for local dev image variants. If either value matches an existing system user/group id, the existing user/group will be deleted before creating the wodby user.

Tools

Tool	all versions
Go toolchain	bundled from the upstream golang image
make	latest Alpine package
git	latest Alpine package

Changelog

Changes per stability tag are reflected in git tag descriptions under releases.

Crond

You can run Crond with this image by changing the command to sudo -E crond -f -d 0 and mounting a crontab file to ./crontab:/etc/crontabs/wodby. Example crontab file contents:

# min	hour	day	month	weekday	command
*/1	*	*	*	*	echo "test" > /mnt/files/cron

SSHD

You can run SSHD with this image by changing the command to sudo /usr/sbin/sshd -De and mounting authorized public keys to /home/wodby/.ssh/authorized_keys.

Adding SSH key

You can add a private SSH key to the container by mounting it to /home/wodby/.ssh/id_rsa.

Complete Go stack

See https://github.com/wodby/stack-go

Orchestration Actions

Usage:

make COMMAND [params ...]

commands:
    check-ready [host max_try wait_seconds delay_seconds]
    files-import source
    files-link public_dir