PBM-1138 Added Run in a Docker doc

docs/install/docker.md

@@ -0,0 +1,81 @@
+# Run Percona Backup for MongoDB in a Docker container
+
+Docker images of Percona Backup for MongoDB are hosted publicly on [Docker Hub](https://hub.docker.com/repository/docker/percona/percona-backup-mongodb).
+
+For more information about using Docker, see the [Docker Docs](https://docs.docker.com/).
+
+!!! note
+
+    Make sure that you are using the latest version of Docker. The ones provided via apt and yum may be outdated and cause errors.
+
+    By default, Docker will pull the image from Docker Hub if it is not available locally.
+
+## Start Percona Backup for MongoDB 
+
+Start Percona Backup for MongoDB container with the following command:
+
+
+```{.bash data-prompt="$"}
+$ docker run --name <container-name> -e PBM_MONGODB_URI="mongodb://<PBM_USER>:<PBM_USER_PASSWORD>@<HOST>:<PORT>" -d percona/percona-backup-mongodb:<tag>-multi
+```
+
+Where:
+
+* `container-name` is the name you want to assign to your container.
+* `PBM_MONGODB-URI` is a [MongoDB Connection URI](https://docs.mongodb.com/manual/reference/connection-string/) string used to connect to MongoDB nodes. See the [Initial setup](initial-setup.md) how to create the PBM user. 
+* `tag-multi` is the tag specifying the version you need. For example, `2.3.0-multi`. The `multi` part of the tag serves to identify the architecture (x86_64 or ARM64) and pull the respective image. See the [full list of tags](https://hub.docker.com/r/perconalab/percona-backup-mongodb/tags).
+
+Note that every MongoDB node (including replica set secondary members and config server replica set nodes) requires a separate instance of Percona Backup for MongoDB. Thus, a typical, 3-node MongoDB replica set requires three instances of Percona Backup for MongoDB.
+
+## Set up Percona Backup for MongoDB 
+
+Percona Backup for MongoDB requires the remote storage where to store data. Use the following commands to configure it:
+
+1. Start a Bash session:
+
+    ```{.bash data-prompt="$"}
+    $ docker run --name <container-name> bash
+    ```
+
+2. Create a YAML configuration file:
+
+	```{.bash data-prompt="$"}
+	$ touch /tmp/pbm_config.yaml
+	```
+
+3. Specify remote storage parameters in the config file. The following example is for S3-compatible backup storage. Check what [other storages are supported](../details/storage-configuration.md):
+
+	```yaml
+	storage:
+		type: s3
+		s3:
+		  region: <your-region-here>
+		  bucket: <your-bucket-here>
+	      credentials:
+	        access-key-id: <your-access-key-id-here>
+		secret-access-key: <your-secret-key-here>
+	```
+
+4. Upload the config file: 
+
+	```{.bash data-prompt="$"}
+	$ pbm config --file /tmp/pbm_config.yaml
+	```
+
+## Run Percona Backup for MongoDB
+
+Percona Backup for MongoDB command line utility (`pbm`) provides the set of commands to control backups: create, restore, cancel backups, etc. 
+
+For example, to start a backup, use the following command:
+
+```{.bash data-prompt="$"}
+$ docker run --name <container-name> pbm backup
+```
+
+where `<container-name>` is the name you assigned to the container and `pbm backup` is the command to start a backup.
+
+In the same way you can run other pbm commands. Find the full list of available commands in [Percona Backup for MongoDB reference](https://docs.percona.com/percona-backup-mongodb/reference/pbm-commands.html).
+
+## Next steps
+
+[List backups](../usage/list-backup.md)

mkdocs-base.yml

@@ -186,7 +186,8 @@ nav:
          - Method 1. From repositories: install/repos.md
          - Method 2. Build from source: install/source.md
          - Method 3. Download tarballs: install/tarball.md
-         - Method 4. Deploy on Kubernetes: install/cloud.md
+         - Method 4. Run in Docker: install/docker.md
+         - Method 5. Deploy on Kubernetes: install/cloud.md
       - Set up and configure: 'install/initial-setup.md'       
       - Make a backup : "usage/start-backup.md"
       - Restore a backup: usage/restore.md