Incubator-superset: docker-build.sh is missing

[jaklan]

Make sure these boxes are checked before submitting your issue - thank you!

• [X] I have checked the superset logs for python stacktraces and included it here as text if there are any.
• [x] I have reproduced the issue with at least the latest released version of superset.
• [X] I have checked the issue tracker for the same issue and I haven't found one similar.

Superset version

0.28.1

Expected results

There is docker-build.sh file in contrib/docker or there is a new installation instruction.

Actual results

There is no docker-build.sh file in contrib/docker, so I can't install the application using these installation steps:
https://superset.incubator.apache.org/installation.html

Steps to reproduce

Just try to install.

[emeraldbay]

Please check commit 02aa3c6395a381e59dced848df55cb1daf733e95.
Obviously the doc is not updated.

@@ -43,22 +43,29 @@ If you know docker, then you're lucky, we have shortcut road for you to
initialize development environment: ::

 git clone https://github.com/apache/incubator-superset/

• cd incubator-superset
• cp contrib/docker/{docker-build.sh,docker-compose.yml,docker-entrypoint.sh,docker-init.sh,Dockerfile} .
• cp contrib/docker/superset_config.py superset/
• bash -x docker-build.sh
• docker-compose up -d
• docker-compose exec superset bash
• bash docker-init.sh
• cd incubator-superset/contrib/docker
• # prefix with SUPERSET_LOAD_EXAMPLES=yes to load examples:
• docker-compose run --rm superset ./docker-init.sh
• # you can run this command everytime you need to start superset now:
• docker-compose up

[soo-shan]

Thanks @emeraldbay
Rewriting above comment for more clarity as it took me a while to realise what the actual commands were.

cd incubator-superset/contrib/docker
# prefix with SUPERSET_LOAD_EXAMPLES=yes to load examples:
docker-compose run --rm superset ./docker-init.sh
# you can run this command everytime you need to start superset now:
docker-compose up

[kakoni]

Documentation has been updated (https://github.com/apache/incubator-superset/blob/master/docs/installation.rst#user-content-start-with-docker) but the actual page hasn't been updated yet

[rngadam]

rngadam-mac:docker rngadam$ docker-compose run --rm superset ./docker-init.sh
Starting superset_postgres_1 ... done
Starting superset_redis_1    ... done
Building superset
ERROR: Dockerfile parse error line 46: unknown instruction: &&

missing backlash in the Dockerfile

[kakoni]

Created PR for this https://github.com/apache/incubator-superset/pull/6567

[rngadam]

ended using prebuilt https://github.com/amancevice/superset instead

[chakshu222]

While installing using the new documentation I am getting this error in the last step
docker-compose up
```superset_1 | Traceback (most recent call last):
superset_1 | File "/usr/local/lib/python3.6/site-packages/flask/cli.py", line 95, in find_best_app
superset_1 | module=module.__name__
superset_1 | flask.cli.NoAppException: Failed to find Flask application or factory in module "app". Use "FLASK_APP=app:name to specify one.
superset_1 | 127.0.0.1 - - [02/Jan/2019 09:58:15] "GET /health HTTP/1.1" 500 -
superset_1 | Traceback (most recent call last):
superset_1 | File "/usr/local/lib/python3.6/site-packages/flask/cli.py", line 95, in find_best_app
superset_1 | module=module.__name__
superset_1 | flask.cli.NoAppException: Failed to find Flask application or factory in module "app". Use "FLASK_APP=app:name to specify one.
superset_1 | 127.0.0.1 - - [02/Jan/2019 09:58:46] "GET /health HTTP/1.1" 500 -
superset_1 | 127.0.0.1 - - [02/Jan/2019 09:59:16] "GET /health HTTP/1.1" 500 -
superset_1 | Traceback (most recent call last):
superset_1 | File "/usr/local/lib/python3.6/site-packages/flask/cli.py", line 95, in find_best_app
superset_1 | module=module.__name__
superset_1 | flask.cli.NoAppException: Failed to find Flask application or factory in module "app". Use "FLASK_APP=app:name to specify one.
superset_1 | 127.0.0.1 - - [02/Jan/2019 09:59:46] "GET /health HTTP/1.1" 500 -
superset_1 | 127.0.0.1 - - [02/Jan/2019 10:00:16] "GET /health HTTP/1.1" 500 -
superset_1 | 127.0.0.1 - - [02/Jan/2019 10:00:46] "GET /health HTTP/1.1" 500 -
superset_1 | 127.0.0.1 - - [02/Jan/2019 10:01:16] "GET /health HTTP/1.1" 500 -

These are first few error messages, getting same errors repeatedly

build completed for these two db

redis_1 | 1:M 02 Jan 08:05:31.291 * The server is now ready to accept connections on port 6379
postgres_1 | 2019-01-02 08:05:33.568 UTC [1] LOG: database system is ready to accept connections
```

How to fix this ?

[chakshu222]

Refer this if getting above issue https://github.com/apache/incubator-superset/issues/6543