Docker Image for Continuous Deployment over SSH, by FEROX

Use this image to increase your development speed. No need to create your own Dockerfile, or gitlab-ci.yml with a lot of ssh-related things, just ask this image to do the job for you !

This image will lookup for environment variables set by your CI/CD to deploy anything via SSH.

• Docker Hub: https://hub.docker.com/r/frxyt/cd-ssh
• GitHub: https://github.com/frxyt/docker-cd-ssh

Docker Hub Image

frxyt/cd-ssh

Variables

Configurable environment variables

These environment variables can be overriden to change the default behavior of the image and adapt it to your needs:

Name	Type	Example	Description
FRX_VARS_DEBUG	string	(Empty, Off) / true *(On)	Display or not readed variables, disabled by default.
FRX_VARS_PREFIX	string	APP_TEST_	Set a prefix for SSH_* variables, empty by default.
SSH_PRIVATE_KEY	string	-----BEGIN RSA PRIVATE KEY-----...	Set the private key to use, empty by default.
SSH_KNOWN_HOSTS	string	Content of ssh-keyscan <hostname>	Set the known_hosts file content, empty by default.
SSH_USER	string	user	Set the username to use, empty by default.
SSH_PASS	string	P@sSw0rd	Set the password to use, empty by default.
SSH_HOST	string	example.com	Set the hostname to use, empty by default.
SSH_PORT	string	22, 2222	Set the port number to use, empty by default.

Notes:

• When FRX_VARS_DEBUG is not empty, the retrieved variables values will be displayed.
• When FRX_VARS_PREFIX has a value, all variables beginning with SSH_ can be prefixed by the content of FRX_VARS_PREFIX.
  • The prefixed value will be used if found, otherwise the non-prefixed variable will be used.
  • For example, if FRX_VARS_PREFIX is set to APP_TEST_: so, if both variables APP_TEST_SSH_HOST and SSH_HOST are set, the image will use the value of APP_TEST_SSH_HOST.
• When SSH_PRIVATE_KEY is empty, the image will use a password authentification with sshpass.
• When SSH_KNOWN_HOSTS is empty, the image will retrieve automatically the host signature with ssh-keyscan.
• When SSH_PORT is empty, the default SSH port will be used (22).

gitlab-ci.yml example

stages:
  - deploy

.template:deploy: &template_deploy
  image: frxyt/cd-ssh
  tags:
    - docker-all
  stage: deploy
  script:
    - cd-ssh "cd /path/to/app && git fetch"
    - cd-ssh "cd /path/to/app && git checkout ${CI_COMMIT_SHA}"

deploy:test:
  <<: *template_deploy
  environment:
    name: test
    url: https://app.example.com
  only:
    - develop
  variables:
    FRX_VARS_PREFIX: APP_TEST_

Then, these variables must be defined in Settings > CI / CD > Environment variables:

• APP_TEST_SSH_HOST
• SSH_KNOWN_HOSTS
• SSH_PRIVATE_KEY
• SSH_USER

License

This project and images are published under the MIT License.

MIT License

Copyright (c) 2019,2022 FEROX YT EIRL, www.ferox.yt <devops@ferox.yt>
Copyright (c) 2019,2022 Jérémy WALTHER <jeremy.walther@golflima.net>

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.