Docker-compose allows you to utilize either preëxisting docker images or build from source. For the build option, the official reference requires
Either a path to a directory containing a Dockerfile, or a url to a git repository.
I'd like to take advantage of the latter case, so that I don't have to create a git submodule in my project, or register a new repository on Docker Hub. Unfortunately, there are no examples for how to format the url, and every form I've tried is mistaken for a relative file path.
e.g.
---
letsencrypt:
build: https://github.com/letsencrypt/letsencrypt.git
...
Fails with the error:
ERROR: build path /{MY_CURRENT_PATH}/https:/github.com/letsencrypt/letsencrypt.git either does not exist or is not accessible.
I didn't have any more luck with the other forms I've tried:
- [email protected]:letsencrypt/letsencrypt.git
- git://github.com/letsencrypt/letsencrypt.git
- https://github.com/letsencrypt/letsencrypt
asked Dec 6, 2015 at 17:37
Are you running version 1.5.2? It looks like this was actually recently added in https://github.com/docker/compose/pull/2430. Try upgrading.
Example:
---
version: '2'
services:
redis:
image: "redis:3.2.3"
hostname: redis
redis-commander:
build: https://github.com/joeferner/redis-commander.git
command: --redis-host redis
links:
- "redis:redis"
ports:
- 8081
Tested with:
$ docker-compose -v
docker-compose version 1.11.2, build dfed245
14.4k10 gold badges57 silver badges63 bronze badges
I forgot the first rule of docker: when in doubt, upgrade. $ docker-compose --version docker-compose version: 1.5.1 Too bad the second rule is, prepare to spend the rest of your day fixing what the upgrade broke…
Yep. Docker is a very fast-paced world right now! :)
If you're on a Mac or Windows, make sure you are using Docker Toolbox to keep all of your Docker tools versioned correctly docker.com/docker-toolbox
How to make it work in docker-compose version: 3 ?
@artificerpi is this possible?
The file tests/unit/config/config_test.py shows:
def test_valid_url_in_build_path(self):
valid_urls = [
'git://github.com/docker/docker',
'[email protected]:docker/docker.git',
'[email protected]:atlassianlabs/atlassian-docker.git',
'https://github.com/docker/docker.git',
'http://github.com/docker/docker.git',
'github.com/docker/docker.git',
]
This is confirmed with compose/config/config.py#L79-L85:
DOCKER_VALID_URL_PREFIXES = (
'http://',
'https://',
'git://',
'github.com/',
'git@',
)
Comments
Sorry to revive this topic, but it came up as the first link and i could't find any other information elsewhere.
If you want to build from a specific repository tag, you will need to append #tagname such as
build: https://github.com/postgres/pgadmin4.git#REL-6_4
see the docker documentation.
Also building on top of the answer of @philipp-fock. Using the raw file works, as long as the original Dockerfile did not include any other files within that repository (no COPY, ADD)
Using
Comments
I think there is a better way to do this now!
If you want to use a Dockerfile that's located inside the repo and the repo is public, your best guess is to use the raw file.
E.g. for the file Dockerfile_dev inside https://github.com/certbot/certbot, you could use https://raw.githubusercontent.com/certbot/certbot/master/Dockerfile-dev
Then in docker-compose, add it like this in order to use the Dockerfile from the remote location.
certbot_dev:
image: certbot-dev
build: https://raw.githubusercontent.com/certbot/certbot/master/Dockerfile-dev
You can find the raw link, when you click on a button called 'Raw' inside the file preview: https://github.com/certbot/certbot/blob/master/Dockerfile-dev
answered Aug 25, 2021 at 7:01
This worked for me! But, a question: does it make sense to have image when you also have build? Doesn't the build key effectively make the image key irrelevant (since no prebuilt image will be downloaded, but rather it will be built using the specified Dockerfile)?
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