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Add some information about the docker build return code 

Signed-off-by: Sven Dowideit <SvenDowideit@home.org.au>
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Sven Dowideit 2015-02-16 10:02:56 +10:00
parent 65623e22aa
commit d15f8feaa8
1 changed files with 23 additions and 0 deletions
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@ -525,6 +525,29 @@ on your local host, and then this is sent to the Docker daemon as the
context. This way, your local user credentials and VPN's etc can be context. This way, your local user credentials and VPN's etc can be
used to access private repositories. used to access private repositories.
### Return code
On a successful build, a return code of success `0` will be returned.
When the build fails, a non-zero failure code will be returned.
There should be informational output of the reason for failure output
to `STDERR`:
```
$ docker build -t fail .
Sending build context to Docker daemon 2.048 kB
Sending build context to Docker daemon
Step 0 : FROM busybox
---> 4986bf8c1536
Step 1 : RUN exit 13
---> Running in e26670ec7a0a
INFO[0000] The command [/bin/sh -c exit 13] returned a non-zero code: 13
$ echo $?
1
```
### .dockerignore file
If a file named `.dockerignore` exists in the root of `PATH` then it If a file named `.dockerignore` exists in the root of `PATH` then it
is interpreted as a newline-separated list of exclusion patterns. is interpreted as a newline-separated list of exclusion patterns.
Exclusion patterns match files or directories relative to `PATH` that Exclusion patterns match files or directories relative to `PATH` that