docker-compose gives ERROR: Cannot locate specified Dockerfile: Dockerfile
DockerDocker ComposeDocker Problem Overview
I've cloned a docker setup which uses docker-compose. One remote developer confirms it works so my problem seems to be with my setup.
I ran docker-compose up, but that currently gives me this:
$ docker-compose up
Creating volume "mycompanydocker_mysql-data" with local driver
Creating volume "mycompanydocker_redis-data" with local driver
Creating volume "mycompanydocker_app-data" with local driver
Creating volume "mycompanydocker_mongo-data" with local driver
mycompanydocker_redis_1 is up-to-date
mycompanydocker_mongo_1 is up-to-date
mycompanydocker_mysql_1 is up-to-date
Building app
ERROR: Cannot locate specified Dockerfile: Dockerfile
My docker-compose.yml looks like this:
version: '2'
services:
mysql:
build: mysql/.
env_file: env
expose:
- 3306
ports:
- "3306:3306"
volumes:
- mysql-data:/var/lib/mysql
mongo:
build: mongo/.
env_file: env
expose:
- 27017
ports:
- "27017:27017"
volumes:
- mongo-data:/data/db
redis:
build: redis/.
env_file: env
expose:
- 6379
ports:
- "6379:6379"
volumes:
- redis-data:/data
app:
build: app/.
env_file: env
expose:
- 80
ports:
- "80:80"
volumes:
# To mount a local directory, change this
# To use a docker volume
- app-data:/app
# local app
# - ./mycompany:/app
depends_on:
- mysql
- mongo
- redis
volumes:
app-data:
driver: local
mysql-data:
driver: local
redis-data:
driver: local
mongo-data:
driver: local
and the tree looks like this:
$ tree
.
├── README.rst
├── app
│ ├── Dockerfile
│ ├── bin
│ │ ├── setup.sh
│ │ ├── start-nginx.sh
│ │ ├── start-rqworker.sh
│ │ ├── start.sh
│ │ └── update.sh
│ ├── etc
│ │ ├── nginx
│ │ │ └── sites-available
│ │ │ └── app
│ │ ├── supervisor
│ │ │ └── conf.d
│ │ │ └── supervisord.conf
│ │ └── supervisord.conf
│ └── ssh
│ └── id_rsa
├── docker-compose.yml
├── env
├── mongo
│ └── Dockerfile
├── mysql
│ └── Dockerfile
└── redis
└── Dockerfile
The thing I don't understand is that docker-compose seems to find all Dockerfiles, except for the one in the app folder. I've got the following installed on OSX 10.11.2:
Docker version 1.10.3, build 20f81dddocker-compose version 1.6.2, build 4d72027
I'm just starting out with Docker and I'm kinda stuck here. Does anybody know what could possibly be wrong or how I can debug this? All tips are welcome!
[EDIT]
I forgot to mention that there is no hidden .dockerignore file:
$ ls -la
total 56
drwx------@ 11 kramer staff 374 25 mrt 14:13 .
drwx------+ 1134 kramer staff 38556 26 mrt 17:27 ..
-rw-r--r--@ 1 kramer staff 8196 26 mrt 08:14 .DS_Store
-rw-r--r--@ 1 kramer staff 23 24 mrt 15:29 .gitignore
-rw-r--r--@ 1 kramer staff 3879 24 mrt 15:29 README.rst
drwxr-xr-x@ 7 kramer staff 238 25 mrt 14:26 app
-rw-r--r--@ 1 kramer staff 868 25 mrt 17:50 docker-compose.yml
-rw-r--r--@ 1 kramer staff 219 24 mrt 15:29 env
drwxr-xr-x@ 3 kramer staff 102 24 mrt 15:29 mongo
drwxr-xr-x@ 3 kramer staff 102 24 mrt 15:29 mysql
drwxr-xr-x@ 3 kramer staff 102 24 mrt 15:29 redis
and the .gitignore file doesn't contain anything special either (don't know if it matters):
$ cat .gitignore
.project
.pydevproject
Docker Solutions
Solution 1 - Docker
Here is how to specify dockerfile. Sorry I cannot do it in comments as formatting is not supported over there.
https://docs.docker.com/compose/compose-file/#context
app:
build:
context: app
dockerfile: Dockerfile
Solution 2 - Docker
I had this problem on Windows with a docker-compose.yml created by a Visual Studio template. The template was created as:
build:
context: .
dockerfile: <ProjectFolder>\Dockerfile
And I was getting error: Cannot locate specified Dockerfile: <ProjectFolder>\Dockerfile. I changed the \ to / and it started working for me (i.e. <ProjectFolder>/Dockerfile). Maybe that will help if anyone has this error on Windows.
Solution 3 - Docker
Inside the docker-compose.yml file to do the change, in order to meet the Dockerfile:
app:
build: ./app
Solution 4 - Docker
You need to specify the docker file name properly and it is case sensitive. I had uppercase letter in DockerFile and so it cannot find them. Hope it helps someone, who struggled like me. Better to use the dockerfile attribute in docker compose file.
app:
build:
dockerfile: DockerFile
Solution 5 - Docker
Tried several variations, for some unknown reason I had to use an absolute path for it to work
├── visit-count
| ├── docker-compose.yml
│ ├── Dockerfile
│ ├── files
│ │ ├── index.js
│ │ ├── package.json
version: '3.5'
services:
visit-count:
build:
context: /Users/deltapeng/source/repos/visit-count/files/
dockerfile: /Users/deltapeng/source/repos/visit-count/Dockerfile
But after I got above working, found that this relative path worked too.
version: '3.5'
services:
visit-count:
build:
context: ./files/
dockerfile: ../
Solution 6 - Docker
Is path where you expect the Dockerfile? You can check using the --verbose flag like:
docker-compose --verbose up | grep compose.cli.verbose_proxy.proxy_callable | grep path
for example:
compose.cli.verbose_proxy.proxy_callable: docker build <-
(pull=False, cache_from=None, stream=True, nocache=False, labels=None,
tag='your_app',
buildargs={'some_build': '1901', 'addr': '0.0.0.0', 'corsdomain': '*',
'rpcport': '8545'}, forcerm=False, rm=True,
path='/Users/jmunsch/Desktop/dev/your_app/app?', # in the verbose output
dockerfile='Dockerfile')
in Dockerfile define the ARGS:
ARG some_flag=
ARG some_build=1900
ARG addr=0.0.0.0
ARG corsdomain="*"
ARG rpcport=8545
and in a compose file like :
build:
context: ./your_app
dockerfile: Dockerfile
args:
some_flag: # --some_flag
some_build: 1901 # --some_build 1901
rpcaddr: 0.0.0.0 # --rpcaddr 0.0.0.0
rpcport: 8545 # --rpcport 8545
corsdomain: "*" # --corsdomain
Solution 7 - Docker
In my case it was wrong branch on git. Don't forget to set the specific branch if you build your image from remote context. Url for context should looks like this:
services:
wss-home:
build:
context: "http://${LOGIN}:${PASSWD}@host/path/to/repository.git#branch_name"
dockerfile: Dockerfile.prod
Solution 8 - Docker
Had this problem with Visual Studio's automatically created docker-compose file and tried @crgolden solution but it didn't work.
I only get it to run after:
1) Renaming the file VS created from DockerFile to Dockerfile (notice the lower case 'f')
2) change the config to this:
services:
...
<image-name>:
build:
context: <project_name>
dockerfile: Dockerfile
Solution 9 - Docker
wrong path, my shortest way on linux ubuntu when dockerfile and compose in same location
build: ./
Solution 10 - Docker
build:
context: ./
dockerfile: DockerFile
this might help for version:'3.8' for the current directory set up otherwise, have to specify dockerfile absolute path like
build:
context: .
dockerfile: <project_directory>\DockerFile
Solution 11 - Docker
I ran into this error because I had my docker-compose in a child directory. What I didn't realize is that in a docker-compose file:
- The build context you specify is relative to where the docker-compose file is located (in the correct first screenshot, the build context moves up two directories from the docker compose file location and is at the base of the repository)
- The dockerfile location you specify is relative to where the build context is set (in the correct first screenshot, I need to go down two directories, into service/deploy, to find the Dockerfile because I just set the context two directories up)
What I was doing before which was resulting in the error: "Cannot locate specified Dockerfile":
I hope this helps someone out!
Solution 12 - Docker
I had faced the same issue on ubuntu vm. I did the following steps:
sudo apt-get remove docker-compose
sudo curl -L "https://github.com/docker/compose/releases/download/1.23.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
sudo chmod +x /usr/local/bin/docker-compose
sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose
I hope this will resolve this issue.
Solution 13 - Docker
build:
context: ./
dockerfile: DockerFile
just add
build:
context: ./
dockerfile: DockerFile.dockerfile