- The build-time variables are passed as environment-context for command(s)
run as part of the RUN primitve. These variables are not persisted in environment of
intermediate and final images when passed as context for RUN. The build environment
is prepended to the intermediate continer's command string for aiding cache lookups.
It also helps with build traceability. But this also makes the feature less secure from
point of view of passing build time secrets.
- The build-time variables also get used to expand the symbols used in certain
Dockerfile primitves like ADD, COPY, USER etc, without an explicit prior definiton using a
ENV primitive. These variables get persisted in the intermediate and final images
whenever they are expanded.
- The build-time variables are only expanded or passed to the RUN primtive if they
are defined in Dockerfile using the ARG primitive or belong to list of built-in variables.
HTTP_PROXY, HTTPS_PROXY, http_proxy, https_proxy, FTP_PROXY and NO_PROXY are built-in
variables that needn't be explicitly defined in Dockerfile to use this feature.
Signed-off-by: Madhav Puri <madhav.puri@gmail.com>
Builds where the base images have been resolved to trusted digest
references will now be tagged with the original tag reference from
the Dockerfile on a successful build.
Docker-DCO-1.1-Signed-off-by: Josh Hawn <josh.hawn@docker.com> (github: jlhawn)
Clean up tests to remove duplicate code
Add tests which run pull and create in an isolated configuration directory.
Add build test for untrusted tag
Signed-off-by: Derek McGowan <derek@mcgstyle.net> (github: dmcgowan)
Build cache uses pgk/tarsum to get a digest of content which is
ADD'd or COPY'd during a build. The builder has always used v0 of
the tarsum algorithm which includes mtimes however since the whole
file is hashed anyway, the mtime doesn't really provide any extra
information about whether the file has changed and many version
control tools like Git strip mtime from files when they are cloned.
This patch updates the build subsystem to use v1 of Tarsum which
explicitly ignores mtime when calculating a digest. Now ADD and
COPY will result in a cache hit if only the mtime and not the file
contents have changed.
NOTE: Tarsum is NOT a meant to be a cryptographically secure hash
function. It is a best-effort approach to determining if two sets of
filesystem content are different.
Docker-DCO-1.1-Signed-off-by: Josh Hawn <josh.hawn@docker.com> (github: jlhawn)
Change CLI error msg because it was too specific and didn't make sense
when there were errors not related to inaccessible files.
Removed some log.Error() calls since they're not really errors we should
log. Returning the error will be enough.
Closes: #13417
Signed-off-by: Doug Davis <dug@us.ibm.com>
Previous fix used %q which incorrectly go-escaped things. For example:
```
RUN echoo A \& B C
```
would result in the user seeing:
```
INFO[0000] The command '/bin/sh -c echoo A \\& B\tC' returned a non-zero code: 127
```
Note the double-\ and the \t instead of a tab character
The testcase had to double escape things due to logrus getting in the way
but I'm going to fix that in another PR because its a change to the UX.
Signed-off-by: Doug Davis <dug@us.ibm.com>
When RUN returns with a non-zero return code it prints the command
that was executed as a Go []string:
```
INFO[0000] The command &{[/bin/sh -c noop a1 a2]} returned a non-zero code: 127
```
instead it should look like this:
```
INFO[0000] The command "/bin/sh -c noop a1 a2" returned a non-zero code: 127
```
Signed-off-by: Doug Davis <dug@us.ibm.com>
This fixes an issue where the build output for the "Steps" would look like:
```
Step 1: RUN echo hi echo hi
```
instead of
```
Step 1: RUN echo hi
```
Also, I noticed that there were no checks to make sure invalid Dockerfile
cmd flags were caught on cmds that didn't use cmd flags at all. They would
have been caught on the cmds that had flags, but cmds that didn't bother
to add a new code for flags would have just ignored them. So, I added
checks to each cmd to flag it.
Added testcases for issues.
Signed-off-by: Doug Davis <dug@us.ibm.com>
John Howard
Antonio Murdaca
Madhav Puri
David Calavera
Alexander Morozov
Doug Davis
Soshi Katsuta
Veres Lajos
Arnaud Porterie
Alexander Morozov
Josh Hawn
Michael Crosby
Brian Goff
Derek McGowan
Shishir Mahajan
Ben Firshman
Vincent Demeester
Moysés Borges
Jessie Frazelle
Antonio Murdaca
Qiang Huang
Zhang Wei
buddhamagnet
David Mackey
Nathan LeClaire
Marianna