Docker:More About Docker containers (#19018)

* added intorduction to setup AWS S3 in Django project to store static assets and media files

* added guidelines to move files between servers

* added more commands for docker-containers

client/src/guide/english/ssh/moving-files-between-servers/index.md

@@ -0,0 +1,38 @@
+---
+title: Moving files between servers
+---
+
+## Moving file from local computer to remote server
+
+* First add public key of remote server to known hosts 
+
+* The command to copy files from local computer to remote server is
+
+```
+    scp -i <loction of servers private key> <file to be transferred> <user>@host:<location where the file has to be transferred>
+
+```
+
+## Moving file from  remote server to local computer
+
+* First add public key of remote server to known hosts 
+
+* The command to copy files from remote server to local computer is
+
+```
+    scp -i <loction of servers private key> <user>@<host>:<location of remote file> <location where the file has to be transferred>
+
+```
+
+## Moving file between remote servers
+
+* First add public key of remote servers to known hosts 
+
+* The command to copy files between remote server to local computer is
+
+```
+    scp -i <loction of servers private key> <user1>@<host1>:<location of remote file> <user2>@<host2>:<location where the file has to be transferred>
+
+```
+
+#### To move entire directory use -r option

client/src/pages/guide/english/containers/docker/More-about-containers/index.md

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+---
+title: More About Docker Containers
+---
+
+## More Commands to manage Docker Containers
+
+* Command to list Running Containers
+
+```
+docker conatiner ls
+
+```
+
+* Command to list all the containers (including the stopped containers)
+
+```
+docker container ls -a 
+
+```
+
+* Command to execute command in the container
+
+```
+docker exec -it <container name> run --rm <command>
+
+```
+
+* Command to view logs of the container 
+
+```
+docker logs <container name>
+
+```
+
+* Command to remove all stopped containers
+
+```
+docker container prune
+
+```
+
+#### More Information
+- [More commands for docker containers]
+(https://docs.docker.com/engine/reference/commandline/container/)

client/src/pages/guide/english/miscellaneous/guide-to-store-media-files-of-django-app-to-aws-s3/index.md

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+---
+title: Django-file-storage
+---
+## Django Media Files and Static files Storage
+
+#### Steps to create AWS S3 Bucket
+
+* Open aws console and create IAM user for S3 bucket
+* In services select S3
+* Create new S3 buket in S3 console
+
+#### Steps to do in django app
+
+* install boto3 and Django-storages libraries. The commands to install these libraries are
+
+```
+pip install boto3
+pip install django-storages
+```
+* Add storages to Installed Apps in ```settings.py```
+
+* To work with satic assets only you have to add the following to your settings.py
+
+```
+AWS_ACCESS_KEY_ID = <your AWS acces key>
+AWS_SECRET_ACCESS_KEY = <your AWS secret key>
+AWS_STORAGE_BUCKET_NAME = <your AWS bucket name>
+AWS_S3_CUSTOM_DOMAIN = '%s.s3.amazonaws.com' % AWS_STORAGE_BUCKET_NAME
+AWS_S3_OBJECT_PARAMETERS = {
+    'CacheControl': 'max-age=86400',
+}
+AWS_LOCATION = 'static'
+
+STATICFILES_DIRS = [
+    os.path.join(BASE_DIR, 'mysite/static'),
+]
+STATIC_URL = 'https://%s/%s/' % (AWS_S3_CUSTOM_DOMAIN, AWS_LOCATION)
+STATICFILES_STORAGE = 'storages.backends.s3boto3.S3Boto3Storage'
+
+```
+* To work with both static and media assets you have to add the following to your settings.py
+
+```
+AWS_ACCESS_KEY_ID = <your AWS acces key>
+AWS_SECRET_ACCESS_KEY = <your AWS secret key>
+AWS_STORAGE_BUCKET_NAME = <your AWS bucket name>
+AWS_S3_CUSTOM_DOMAIN = '%s.s3.amazonaws.com' % AWS_STORAGE_BUCKET_NAME
+AWS_S3_OBJECT_PARAMETERS = {
+    'CacheControl': 'max-age=86400',
+}
+AWS_LOCATION = 'static'
+
+STATICFILES_DIRS = [
+    os.path.join(BASE_DIR, 'mysite/static'),
+]
+STATIC_URL = 'https://%s/%s/' % (AWS_S3_CUSTOM_DOMAIN, AWS_LOCATION)
+STATICFILES_STORAGE = 'storages.backends.s3boto3.S3Boto3Storage'
+
+DEFAULT_FILE_STORAGE = 'mysite.storage_backends.MediaStorage'
+
+```