e96e17d102
Before this change, the function could print an error in some cases, for example;
```bash
docker -H tcp://127.0.0.1:2375 info --format '{{.LoggingDriver}}'
template: :1:2: executing "" at <.LoggingDriver>: reflect: indirection through nil pointer to embedded struct field Info
```
With this patch applied, the error is handled gracefully, and when failing to
connect with the daemon, the error is logged;
```bash
docker -H tcp://127.0.0.1:2375 info --format '{{.LoggingDriver}}'
Cannot connect to the Docker daemon at tcp://127.0.0.1:2375. Is the docker daemon running?
docker -H tcp://127.0.0.1:2375 info --format '{{json .}}'
Cannot connect to the Docker daemon at tcp://127.0.0.1:2375. Is the docker daemon running?
{"ID":"","Containers":0,"..."}}
```
Note that the connection error is also included in the JSON `ServerErrors` field,
so that the information does not get lost, even if STDERR would be redirected;
```bash
docker -H tcp://127.0.0.1:2375 info --format '{{json .ServerErrors}}' 2> /dev/null
["Cannot connect to the Docker daemon at tcp://127.0.0.1:2375. Is the docker daemon running?"]
```
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Docker CLI
About
This repository is the home of the cli used in the Docker CE and Docker EE products.
Development
docker/cli is developed using Docker.
Build CLI from source:
docker buildx bake
Build binaries for all supported platforms:
docker buildx bake cross
Build for a specific platform:
docker buildx bake --set binary.platform=linux/arm64
Build dynamic binary for glibc or musl:
USE_GLIBC=1 docker buildx bake dynbinary
Run all linting:
docker buildx bake lint shellcheck
Run test:
docker buildx bake test
List all the available targets:
make help
In-container development environment
Start an interactive development environment:
make -f docker.Makefile shell
Legal
Brought to you courtesy of our legal counsel. For more context, please see the NOTICE document in this repo.
Use and transfer of Docker may be subject to certain restrictions by the United States and other governments.
It is your responsibility to ensure that your use and/or transfer does not violate applicable laws.
For more information, please see https://www.bis.doc.gov
Licensing
docker/cli is licensed under the Apache License, Version 2.0. See LICENSE for the full license text.