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Add some more specific help for Dockerfile build contexts. 

I've copy and pasted the error message so its googlable.

Docker-DCO-1.1-Signed-off-by: SvenDowideit <SvenDowideit@home.org.au> (github: SvenDowideit)
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SvenDowideit 2014-05-13 13:38:11 +10:00 committed by Tibor Vass
parent a8f2402b87
commit 6a55530c56
1 changed files with 9 additions and 1 deletions
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10
docs/sources/reference/commandline/cli.md
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@ -201,7 +201,8 @@ and a "context".
The files at `PATH` or `URL` are called the "context" of the build. The build The files at `PATH` or `URL` are called the "context" of the build. The build
process may refer to any of the files in the context, for example when using an process may refer to any of the files in the context, for example when using an
[*ADD*](/reference/builder/#dockerfile-add) instruction. When a single Dockerfile is [*ADD*](/reference/builder/#dockerfile-add) instruction. When a single Dockerfile is
given as `URL`, then no context is set. given as `URL` or is piped through STDIN (`docker build - < Dockerfile`), then
no context is set.
When a Git repository is set as `URL`, then the When a Git repository is set as `URL`, then the
repository is used as the context. The Git repository is cloned with its repository is used as the context. The Git repository is cloned with its
@ -283,6 +284,13 @@ repository is used as Dockerfile. Note that you
can specify an arbitrary Git repository by using the `git://` can specify an arbitrary Git repository by using the `git://`
schema. schema.
> **Note:** `docker build` will return a `no such file or directory` error
> if the file or directory does not exist in the uploaded context. This may
> happen if there is no context, or if you specify a file that is elsewhere
> on the Host system. The context is limited to the current directory (and its
> children) for security reasons, and to ensure repeatable builds on remote
> Docker hosts. This is also the reason why `ADD ../file` will not work.
## commit ## commit
Create a new image from a container᾿s changes Create a new image from a container᾿s changes