Merge pull request #2519 from thaJeztah/markup_touch_ups

docs: more Markdown touch-ups
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Silvin Lubecki 2020-05-11 17:49:19 +02:00 committed by GitHub
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15 changed files with 453 additions and 372 deletions

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@ -384,14 +384,15 @@ contents of the `debug` file instead of looking for a `Dockerfile` and will use
directory structure of the build context, regardless of how you refer to it on directory structure of the build context, regardless of how you refer to it on
the command line. the command line.
> **Note:** > **Note**
> `docker build` will return a `no such file or directory` error if the >
> `docker build` returns a `no such file or directory` error if the
> file or directory does not exist in the uploaded context. This may > 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 > 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 > elsewhere on the Host system. The context is limited to the current
> directory (and its children) for security reasons, and to ensure > directory (and its children) for security reasons, and to ensure
> repeatable builds on remote Docker hosts. This is also the reason why > repeatable builds on remote Docker hosts. This is also the reason why
> `ADD ../file` will not work. > `ADD ../file` does not work.
### Use a custom parent cgroup (--cgroup-parent) ### Use a custom parent cgroup (--cgroup-parent)
@ -672,30 +673,47 @@ The `--squash` option has a number of known limitations:
#### Prerequisites #### Prerequisites
The example on this page is using experimental mode in Docker 1.13. The example on this page is using experimental mode in Docker 19.03.
Experimental mode can be enabled by using the `--experimental` flag when starting the Docker daemon or setting `experimental: true` in the `daemon.json` configuration file. Experimental mode can be enabled by using the `--experimental` flag when starting
the Docker daemon or setting `experimental: true` in the `daemon.json` configuration
file.
By default, experimental mode is disabled. To see the current configuration, use the `docker version` command. By default, experimental mode is disabled. To see the current configuration of
the docker daemon, use the `docker version` command and check the `Experimental`
line in the `Engine` section:
```none ```console
Server: Client: Docker Engine - Community
Version: 1.13.1 Version: 19.03.8
API version: 1.26 (minimum version 1.12) API version: 1.40
Go version: go1.7.5 Go version: go1.12.17
Git commit: 092cba3 Git commit: afacb8b
Built: Wed Feb 8 06:35:24 2017 Built: Wed Mar 11 01:21:11 2020
OS/Arch: linux/amd64 OS/Arch: darwin/amd64
Experimental: false Experimental: false
Server: Docker Engine - Community
Engine:
Version: 19.03.8
API version: 1.40 (minimum version 1.12)
Go version: go1.12.17
Git commit: afacb8b
Built: Wed Mar 11 01:29:16 2020
OS/Arch: linux/amd64
Experimental: true
[...] [...]
``` ```
To enable experimental mode, users need to restart the docker daemon with the experimental flag enabled. To enable experimental mode, users need to restart the docker daemon with the
experimental flag enabled.
#### Enable Docker experimental #### Enable Docker experimental
Experimental features are now included in the standard Docker binaries as of version 1.13.0. For enabling experimental features, you need to start the Docker daemon with `--experimental` flag. You can also enable the daemon flag via /etc/docker/daemon.json. e.g. Experimental features are now included in the standard Docker binaries as of
version 1.13.0. For enabling experimental features, you need to start the
Docker daemon with `--experimental` flag. You can also enable the daemon flag
via `/etc/docker/daemon.json`. e.g.
```json ```json
{ {
@ -731,7 +749,7 @@ $ docker build --squash -t test .
[...] [...]
``` ```
If everything is right, the history will look like this: If everything is right, the history looks like this:
```bash ```bash
$ docker history test $ docker history test
@ -747,6 +765,8 @@ IMAGE CREATED CREATED BY
<missing> 7 weeks ago /bin/sh -c #(nop) ADD file:47ca6e777c36a4cfff 1.113 MB <missing> 7 weeks ago /bin/sh -c #(nop) ADD file:47ca6e777c36a4cfff 1.113 MB
``` ```
We could find that all layer's name is `<missing>`, and there is a new layer with COMMENT `merge`. We could find that a layer's name is `<missing>`, and there is a new layer with
COMMENT `merge`.
Test the image, check for `/remove_me` being gone, make sure `hello\nworld` is in `/hello`, make sure the `HELLO` envvar's value is `world`. Test the image, check for `/remove_me` being gone, make sure `hello\nworld` is
in `/hello`, make sure the `HELLO` environment variable's value is `world`.

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@ -676,7 +676,7 @@ thin pool device deletion is synchronous. Before a container is deleted,
the Docker daemon removes any associated devices. If the storage driver the Docker daemon removes any associated devices. If the storage driver
can not remove a device, the container deletion fails and daemon returns. can not remove a device, the container deletion fails and daemon returns.
```none ```console
Error deleting container: Error response from daemon: Cannot destroy container Error deleting container: Error response from daemon: Cannot destroy container
``` ```
@ -1264,9 +1264,9 @@ to avoid collisions with other prometheus exporters and services.
If you are running a prometheus server you can add this address to your scrape configs If you are running a prometheus server you can add this address to your scrape configs
to have prometheus collect metrics on Docker. For more information to have prometheus collect metrics on Docker. For more information
on prometheus you can view the website [here](https://prometheus.io/). on prometheus refer to the [prometheus website](https://prometheus.io/).
```none ```yaml
scrape_configs: scrape_configs:
- job_name: 'docker' - job_name: 'docker'
static_configs: static_configs:
@ -1414,7 +1414,9 @@ This is a full example of the allowed configuration options on Linux:
} }
``` ```
> **Note:** You cannot set options in `daemon.json` that have already been set on > **Note:**
>
> You cannot set options in `daemon.json` that have already been set on
> daemon startup as a flag. > daemon startup as a flag.
> On systems that use `systemd` to start the Docker daemon, `-H` is already set, so > On systems that use `systemd` to start the Docker daemon, `-H` is already set, so
> you cannot use the `hosts` key in `daemon.json` to add listening addresses. > you cannot use the `hosts` key in `daemon.json` to add listening addresses.
@ -1534,7 +1536,7 @@ by providing them as flags, or by using a [daemon configuration file](#daemon-co
The following daemon options must be configured for each daemon: The following daemon options must be configured for each daemon:
```none ```console
-b, --bridge= Attach containers to a network bridge -b, --bridge= Attach containers to a network bridge
--exec-root=/var/run/docker Root of the Docker execdriver --exec-root=/var/run/docker Root of the Docker execdriver
--data-root=/var/lib/docker Root of persisted Docker data --data-root=/var/lib/docker Root of persisted Docker data

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@ -222,7 +222,7 @@ $ docker stop test
**Shell 1: (Again .. now showing events):** **Shell 1: (Again .. now showing events):**
```none ```console
2017-01-05T00:35:58.859401177+08:00 container create 0fdb48addc82871eb34eb23a847cfd033dedd1a0a37bef2e6d9eb3870fc7ff37 (image=alpine:latest, name=test) 2017-01-05T00:35:58.859401177+08:00 container create 0fdb48addc82871eb34eb23a847cfd033dedd1a0a37bef2e6d9eb3870fc7ff37 (image=alpine:latest, name=test)
2017-01-05T00:36:04.703631903+08:00 network connect e2e1f5ceda09d4300f3a846f0acfaa9a8bb0d89e775eb744c5acecd60e0529e2 (container=0fdb...ff37, name=bridge, type=bridge) 2017-01-05T00:36:04.703631903+08:00 network connect e2e1f5ceda09d4300f3a846f0acfaa9a8bb0d89e775eb744c5acecd60e0529e2 (container=0fdb...ff37, name=bridge, type=bridge)
2017-01-05T00:36:04.795031609+08:00 container start 0fdb...ff37 (image=alpine:latest, name=test) 2017-01-05T00:36:04.795031609+08:00 container start 0fdb...ff37 (image=alpine:latest, name=test)

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@ -204,7 +204,7 @@ $ docker info --format '{{json .}}'
Here is a sample output for a daemon running on Windows Server 2016: Here is a sample output for a daemon running on Windows Server 2016:
```none ```console
E:\docker>docker info E:\docker>docker info
Client: Client:
Context: default Context: default

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@ -47,9 +47,13 @@ template for each result. Go's
[text/template](http://golang.org/pkg/text/template/) package describes all the [text/template](http://golang.org/pkg/text/template/) package describes all the
details of the format. details of the format.
```none ```bash
$ sudo docker network inspect bridge $ sudo docker network inspect bridge
```
The output is in JSON format, for example:
```json
[ [
{ {
"Name": "bridge", "Name": "bridge",
@ -106,9 +110,13 @@ $ docker network create simple-network
69568e6336d8c96bbf57869030919f7c69524f71183b44d80948bd3927c87f6a 69568e6336d8c96bbf57869030919f7c69524f71183b44d80948bd3927c87f6a
``` ```
```none ```bash
$ docker network inspect simple-network $ docker network inspect simple-network
```
The output is in JSON format, for example:
```json
[ [
{ {
"Name": "simple-network", "Name": "simple-network",
@ -138,9 +146,13 @@ For swarm mode overlay networks `network inspect` also shows the IP address and
of the peers. Peers are the nodes in the swarm cluster which have at least one task attached of the peers. Peers are the nodes in the swarm cluster which have at least one task attached
to the network. Node name is of the format `<hostname>-<unique ID>`. to the network. Node name is of the format `<hostname>-<unique ID>`.
```none ```bash
$ docker network inspect ingress $ docker network inspect ingress
```
The output is in JSON format, for example:
```json
[ [
{ {
"Name": "ingress", "Name": "ingress",
@ -203,6 +215,11 @@ attached to. service `s1` in this case has three replicas.
```bash ```bash
$ docker network inspect --verbose ov1 $ docker network inspect --verbose ov1
```
The output is in JSON format, for example:
```json
[ [
{ {
"Name": "ov1", "Name": "ov1",

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@ -64,7 +64,7 @@ networks without the specified labels.
The following removes networks created more than 5 minutes ago. Note that The following removes networks created more than 5 minutes ago. Note that
system networks such as `bridge`, `host`, and `none` will never be pruned: system networks such as `bridge`, `host`, and `none` will never be pruned:
```none ```bash
$ docker network ls $ docker network ls
NETWORK ID NAME DRIVER SCOPE NETWORK ID NAME DRIVER SCOPE

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@ -174,7 +174,7 @@ ea09c3c82f6e registry:latest /srv/run.sh 2 weeks ago
You can use a filter to locate containers that exited with status of `137` You can use a filter to locate containers that exited with status of `137`
meaning a `SIGKILL(9)` killed them. meaning a `SIGKILL(9)` killed them.
```none ```bash
$ docker ps -a --filter 'exited=137' $ docker ps -a --filter 'exited=137'
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES

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@ -437,7 +437,7 @@ variables. (Unlike environment variables, labels are not visible to processes
running inside a container.) The following example illustrates a label-file running inside a container.) The following example illustrates a label-file
format: format:
```none ```console
com.example.label1="a label" com.example.label1="a label"
# this is a comment # this is a comment

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@ -32,7 +32,7 @@ Search [Docker Hub](https://hub.docker.com) for images
This example displays images with a name containing 'busybox': This example displays images with a name containing 'busybox':
```none ```bash
$ docker search busybox $ docker search busybox
NAME DESCRIPTION STARS OFFICIAL AUTOMATED NAME DESCRIPTION STARS OFFICIAL AUTOMATED

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@ -67,7 +67,7 @@ $ docker secret create --label env=dev \
eo7jnzguqgtpdah3cm5srfb97 eo7jnzguqgtpdah3cm5srfb97
``` ```
```none ```bash
$ docker secret inspect my_secret $ docker secret inspect my_secret
[ [

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@ -50,9 +50,13 @@ ID NAME CREATED UPDATED
eo7jnzguqgtpdah3cm5srfb97 my_secret 3 minutes ago 3 minutes ago eo7jnzguqgtpdah3cm5srfb97 my_secret 3 minutes ago 3 minutes ago
``` ```
```none ```bash
$ docker secret inspect secret.json $ docker secret inspect secret.json
```
The output is in JSON format, for example:
```json
[ [
{ {
"ID": "eo7jnzguqgtpdah3cm5srfb97", "ID": "eo7jnzguqgtpdah3cm5srfb97",

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@ -53,7 +53,11 @@ produce the same result:
```bash ```bash
$ docker service inspect redis $ docker service inspect redis
```
The output is in JSON format, for example:
```json
[ [
{ {
"ID": "dmu1ept4cxcfe8k8lhtux3ro3", "ID": "dmu1ept4cxcfe8k8lhtux3ro3",

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@ -31,6 +31,11 @@ following example prints trust information for the `alpine:latest` image:
```bash ```bash
$ docker trust inspect alpine:latest $ docker trust inspect alpine:latest
```
The output is in JSON format, for example:
```json
[ [
{ {
"Name": "alpine:latest", "Name": "alpine:latest",
@ -76,6 +81,11 @@ commands, `docker trust inspect` includes a `Signers` key:
```bash ```bash
$ docker trust inspect my-image:purple $ docker trust inspect my-image:purple
```
The output is in JSON format, for example:
```json
[ [
{ {
"Name": "my-image:purple", "Name": "my-image:purple",
@ -158,7 +168,11 @@ However, if other tags are signed in the same image repository,
```bash ```bash
$ docker trust inspect alpine:unsigned $ docker trust inspect alpine:unsigned
```
The output is in JSON format, for example:
```json
[ [
{ {
"Name": "alpine:unsigned", "Name": "alpine:unsigned",
@ -192,7 +206,11 @@ signed tags in the repository:
```bash ```bash
$ docker trust inspect alpine $ docker trust inspect alpine
```
The output is in JSON format, for example:
```json
[ [
{ {
"Name": "alpine", "Name": "alpine",
@ -257,7 +275,11 @@ and reports the results in an ordered list:
```bash ```bash
$ docker trust inspect alpine notary $ docker trust inspect alpine notary
```
The output is in JSON format, for example:
```json
[ [
{ {
"Name": "alpine", "Name": "alpine",

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@ -46,7 +46,7 @@ Volume names must be unique among drivers. This means you cannot use the same
volume name with two different drivers. If you attempt this `docker` returns an volume name with two different drivers. If you attempt this `docker` returns an
error: error:
```none ```console
A volume named "hello" already exists with the "some-other" driver. Choose a different volume name. A volume named "hello" already exists with the "some-other" driver. Choose a different volume name.
``` ```

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@ -27,27 +27,39 @@ details of the format.
## Examples ## Examples
```bash ```bash
$ docker volume create $ docker volume create myvolume
8140a838303144125b4f54653b47ede0486282c623c3551fbc7f390cdc3e9cf5 myvolume
```
$ docker volume inspect 85bffb0677236974f93955d8ecc4df55ef5070117b0e53333cc1b443777be24d Use the `docker volume inspect` comment to inspect the configuration of the volume:
```bash
$ docker volume inspect myvolume
```
The output is in JSON format, for example:
```json
[ [
{ {
"CreatedAt": "2020-04-19T11:00:21Z", "CreatedAt": "2020-04-19T11:00:21Z",
"Driver": "local", "Driver": "local",
"Labels": {}, "Labels": {},
"Mountpoint": "/var/lib/docker/volumes/8140a838303144125b4f54653b47ede0486282c623c3551fbc7f390cdc3e9cf5/_data", "Mountpoint": "/var/lib/docker/volumes/8140a838303144125b4f54653b47ede0486282c623c3551fbc7f390cdc3e9cf5/_data",
"Name": "8140a838303144125b4f54653b47ede0486282c623c3551fbc7f390cdc3e9cf5", "Name": "myvolume",
"Options": {}, "Options": {},
"Scope": "local" "Scope": "local"
} }
] ]
```
Use the `--format` flag to format the output using a Go template, for example,
to print the `Mountpoint` property:
$ docker volume inspect --format '{{ .Mountpoint }}' 8140a838303144125b4f54653b47ede0486282c623c3551fbc7f390cdc3e9cf5 ```bash
$ docker volume inspect --format '{{ .Mountpoint }}' myvolume
/var/lib/docker/volumes/8140a838303144125b4f54653b47ede0486282c623c3551fbc7f390cdc3e9cf5/_data /var/lib/docker/volumes/myvolume/_data
``` ```
## Related commands ## Related commands