Meanwhile this has been added to docker-compose as [docker-compose config][1]. Validating your file now is as simple as
`docker-compose -f docker-compose.yml config`. As always, you can omit the `-f docker-compose.yml` part when running this in the same folder as the file itself or having the [COMPOSE_FILE environment variable pointing to your file][2].


  [1]: https://docs.docker.com/compose/reference/config/
  [2]: https://docs.docker.com/compose/reference/envvars/#/composefile

Use pre-commit framework https://pre-commit.com/#usage and this hook https://github.com/IamTheFij/docker-pre-commit.

Install pre-commit and add these lines to `.pre-commit-config.yaml`:

```
repos:
  # Docker hooks
  - repo: https://github.com/IamTheFij/docker-pre-commit
    rev: v2.0.0
    hooks:
      - id: docker-compose-check
```

Then run `precommit run --all-files`.

A common way to dismiss a modal is to swipe down - How do we allows the user to drag the modal down, if it&#39;s far enough, the modal&#39;s dismissed, otherwise it animates back to the original position?

For example, we can find this used on the Twitter app&#39;s photo views, or Snapchat&#39;s &quot;discover&quot; mode.

Similar threads point out that we can use a UISwipeGestureRecognizer and [self dismissViewControllerAnimated...] to dismiss a modal VC when a user swipes down. But this only handles a single swipe, not letting the user drag the modal around.

In iOS, how to drag down to dismiss a modal?

I&#39;m trying to filter all my issues on github like this:

    label:bug OR label:enhancement
But obviously that does not work. I found this page
https://help.github.com/articles/searching-issues/
and i thought it must be written there, but I cannot figure out how to do it. 

Could it really be that one cannot filter issues of two labels? I mean that would be such a basic task, wouldn&#39;t it?

Well if anyone could give me a hint upon that matter I&#39;d be glad to hear it.

Can I search github labels with logical operator OR?

Is there any easy way to verify the syntax, etc of a docker-compose file (`docker-compose.yml` aka `fig.yml`) without having to run docker proper?

I am trying to add a quick check to my build / test pipeline to verify my compose files.

Validating docker-compose yml file

<p>Is there any easy way to verify the syntax, etc of a docker-compose file (<code>docker-compose.yml</code> aka <code>fig.yml</code>) without having to run docker proper?</p>
<p>I am trying to add a quick check to my build / test pipeline to verify my compose files.</p>


I have a docker with a php application on it

I have a share volume, for example

    /home/me/dev/site &lt;=&gt; /var/www/site

I can write something in my host, it will be sync with the container

if I launch

    sudo docker exec test touch /var/www/site/test.txt

It works 

But if my server is trying to create a file as `www-data` this is not working because of the rights.

Is there a way to give access to my shared volumes to `www-data` ?

I am using boot2docker

write in shared volumes docker

Having the following docker-compose file:


    db:
        build: .
        environment:
            - MYSQL_ROOT_PASSWORD=password
            - ENV=test
        env_file: .env


Is there any way to use the env variables declared in docker-compose.yml (either as environment or declared in the env_file) as part of Dockerfile without declaring them in the Dockerfile? Something like this:

    FROM java:7
    ADD ${ENV}/data.xml /data/
    CMD [&quot;run.sh&quot;]

Use docker-compose env variable in Dockerbuild file

I am newbie to the world of virtualization. Can some one explain to me the differences between OpenVZ and Docker?

What could be good for the future?

Pros and cons?


Difference between Docker and OpenVZ

I would like to be able to use env variables inside docker-compose.yml, with values passed in at the time of `docker-compose up`. This is the example.

I am doing this today with basic docker run command, which is wrapped around my own script.
Is there a way to achieve it with compose, without any such bash wrappers?

&lt;!-- language: lang-yaml --&gt;

    proxy:
      hostname: $hostname
      volumes:
        - /mnt/data/logs/$hostname:/logs
        - /mnt/data/$hostname:/data


How to use environment variables in docker compose

`docker exec -it` command returns following error &quot;cannot enable tty mode on non tty input&quot; 

    level=&quot;fatal&quot; msg=&quot;cannot enable tty mode on non tty input&quot; 

I am running docker(1.4.1) on centos box 6.6.
I am trying to execute the following command
`docker exec -it containerName /bin/bash`
but I am getting following error 

    level=&quot;fatal&quot; msg=&quot;cannot enable tty mode on non tty input&quot; 

docker exec -it returns &quot;cannot enable tty mode on non tty input&quot;

I have been reading up and learning about &lt;a href=&quot;https://docs.docker.com/&quot;&gt;Docker&lt;/a&gt;, and am trying to correctly choose the Django setup to use. So far there is either:

&lt;a href=&quot;https://docs.docker.com/compose/&quot;&gt;Docker Compose&lt;/a&gt; or [Dockerfile][1]

I understand that _Dockerfiles_ are used in _Docker Compose_, but I am not sure if it is good practice to put everything in one large Dockerfile with multiple `FROM` commands for the different images?

I want to use several different images that include:

    uwsgi
    nginx
    postgres
    redis
    rabbitmq
    celery with cron

Please advise on what are best practices in setting up this type of environment using *Docker*.

If it helps, I am on a Mac, so using &lt;a href=&quot;https://github.com/boot2docker&quot;&gt;boot2docker&lt;/a&gt;.

Some issues I&#39;ve had:

1. Docker Compose is not compatible with Python3
2. I want to containerize my project, so if one large Dockerfile 
is not ideal, then I feel I&#39;d need to break it up using Docker Compose
3. I am OK to make the project Py2 &amp; Py3 compatible, so am leaning towards django-compose


  [1]: https://docs.docker.com/engine/reference/builder/

What&#39;s the difference between Docker Compose vs. Dockerfile

Right now our Jenkins agents generate a docker-compose.yml for each of our Rails projects and then run docker-compose up. The docker-compose.yml has a main &quot;web&quot; container that has rbenv and all of our other Rails dependencies inside. It is linked to a DB container that contains the test Postgres DB.

The problem comes when we need to actually run the tests and generate exit codes. Our CI server will only deploy if the test script returns exit 0, but docker-compose always returns 0, even if one of the container commands fail.

The other issue is that the DB container runs indefinitely, even after the web container is done running the tests, so `docker-compose up` never returns.

Is there a way we can use docker-compose for this process? We would need to be able to run the containers, but exit after the web container is complete and return it&#39;s exit code. Right now we are stuck manually using docker to spin up the DB container and run the web container with the --link option.

Using docker-compose with CI - how to deal with exit codes and daemonized linked containers?

I am trying to setup a postgres container and want to setup the postgres login with:

    POSTGRES_USER: docker
    POSTGRES_PASSWORD: docker

So I have created the docker-compose.yml like so

    web:
      build: .
      ports:
        - &quot;62576:62576&quot;
      links:
       - redis
       - db
    db:
      image: postgres
      environment:
        POSTGRES_PASSWORD: docker
        POSTGRES_USER: docker
  
    redis:
       image: redis

I have also tried the other syntax for environment variable declaring the db section as:

    db:
      image: postgres
      environment:
       - POSTGRES_PASSWORD=docker
       - POSTGRES_USER=docker

However neither of these options seem to work because for whatever reason whenever I try to connect to the postgres database using the various connection strings:

    postgres://postgres:postgres@db:5432/users
    postgres://postgres:docker@db:5432/users
    postgres://docker:docker@db:5432/users

They all give me auth failures as opposed to complaining there is no users  database. 

Content Type	Original Author	Original Content on Stackoverflow
Question	Alex Rothberg	View Question on Stackoverflow
Solution 1 - Docker	Dirk	View Answer on Stackoverflow
Solution 2 - Docker	haruhi	View Answer on Stackoverflow

Validating docker-compose yml file

Docker Problem Overview

Docker Solutions

Solution 1 - Docker

Solution 2 - Docker

Can I search github labels with logical operator OR?

In iOS, how to drag down to dismiss a modal?

Attributions