unhelpful error if build arg is not string #2927
Description
I have a simple docker-compose.yml file. I've just spent the past 2 hours puzzled due to an unhelpful error message.
I had a build arg that was a number, rather than a string. Here is a sample docker-compose.yml:
version: '2'
services:
web:
build:
context: .
args:
some_ip: "192.168.9.2"
some_port: 1812 # culprit
some_other_var: "var"
ports:
- "80:80"
edit: added the other args from my docker-compose.yml just in case they had an effect.
The build command I was using is as follows:
horrorscope:Sat-Elite connorbode$ docker-compose --verbose up
compose.config.config.find: Using configuration files: ./docker-compose.yml
docker.auth.auth.load_config: Couldn't find 'auths' or 'HttpHeaders' sections
docker.auth.auth.load_config: 'auth'
docker.auth.auth.load_config: Attempting to parse legacy auth file format
docker.auth.auth.load_config: list index out of range
docker.auth.auth.load_config: All parsing attempts failed - returning empty config
compose.cli.command.get_client: docker-compose version 1.6.0, build d99cad6
docker-py version: 1.7.0
CPython version: 2.7.9
OpenSSL version: OpenSSL 1.0.1j 15 Oct 2014
compose.cli.command.get_client: Docker base_url: https://192.168.99.100:2376
compose.cli.command.get_client: Docker version: KernelVersion=4.1.17-boot2docker, Os=linux, BuildTime=2016-02-11T20:39:58.688092588+00:00, ApiVersion=1.22, Version=1.10.1, GitCommit=9e83765, Arch=amd64, GoVersion=go1.5.3
compose.cli.verbose_proxy.proxy_callable: docker inspect_network <- (u'satelite_default')
compose.cli.verbose_proxy.proxy_callable: docker inspect_network -> {u'Containers': {},
u'Driver': u'bridge',
u'IPAM': {u'Config': [{u'Gateway': u'172.18.0.1/16',
u'Subnet': u'172.18.0.0/16'}],
u'Driver': u'default',
u'Options': None},
u'Id': u'7a72e5a7a3a591e186796c7709d9578dc0619a3a59d4526c46c826663d3e8936',
u'Name': u'satelite_default',
u'Options': {},
u'Scope': u'local'}
compose.cli.verbose_proxy.proxy_callable: docker containers <- (all=True, filters={u'label': [u'com.docker.compose.project=satelite', u'com.docker.compose.service=web', u'com.docker.compose.oneoff=False']})
compose.cli.verbose_proxy.proxy_callable: docker containers -> (list with 0 items)
compose.cli.verbose_proxy.proxy_callable: docker containers <- (all=True, filters={u'label': [u'com.docker.compose.project=satelite', u'com.docker.compose.service=web', u'com.docker.compose.oneoff=False']})
compose.cli.verbose_proxy.proxy_callable: docker containers -> (list with 0 items)
compose.cli.verbose_proxy.proxy_callable: docker inspect_image <- (u'satelite_web')
compose.service.build: Building web
compose.cli.verbose_proxy.proxy_callable: docker build <- (pull=False, stream=True, nocache=False, tag=u'satelite_web', buildargs={'some_port': '1812'}, rm=True, forcerm=False, path='/Users/connorbode/Workspaces/net-satori/Sat-Elite', dockerfile=None)
docker.api.build._set_auth_headers: Looking for auth config
docker.api.build._set_auth_headers: No auth config in memory - loading from filesystem
docker.auth.auth.load_config: Couldn't find 'auths' or 'HttpHeaders' sections
docker.auth.auth.load_config: 'auth'
docker.auth.auth.load_config: Attempting to parse legacy auth file format
docker.auth.auth.load_config: list index out of range
docker.auth.auth.load_config: All parsing attempts failed - returning empty config
docker.api.build._set_auth_headers: No auth config found
ERROR: compose.cli.main.main: Couldn't connect to Docker daemon - you might need to run `docker-machine start default`.
Changing my docker-compose.yml to use a string for the build arg fixed the error. Not sure what happened, but again, it was a few hours of Googling for me.
version: '2'
services:
web:
build:
context: .
args:
some_ip: "192.168.9.2"
some_port: "1812" # changed
some_other_var: "var"
ports:
- "80:80"
edit: added the other args from my docker-compose.yml just in case they had an effect.