fix push docker release and update readme

Author: AlexAkulov

ReadMe.md

@@ -10,7 +10,8 @@ Tool for easy ClickHouse backup and restore with S3 support
 ## Features
 
 - Easy creating and restoring backups of all or specific tables
-- Most efficient AWS S3 uploading and downloading with streaming archiving and extracting
+- Efficient storing of multiple backups on the file system
+- Most efficient AWS S3 uploading and downloading with streaming compression
 - Support of incremental backups on S3
 
 ## Compatibility
@@ -108,7 +109,7 @@ s3:
   backups_to_keep_s3: 0        # BACKUPS_TO_KEEP_S3
   compression_level: 1         # S3_COMPRESSION_LEVEL
   # supports 'tar', 'lz4', 'bzip2', 'gzip', 'sz', 'xz'
-  compression_format: lz4      # S3_COMPRESSION_FORMAT
+  compression_format: gzip      # S3_COMPRESSION_FORMAT
 ```
 
 ## ATTENTION!
@@ -168,4 +169,4 @@ Use https://healthchecks.io for monitoring creating and uploading of backups.
         - uri: url="https://hc-ping.com/{{ healthchecksio_clickhouse_upload_id }}"
       rescue:
         - uri: url="https://hc-ping.com/{{ healthchecksio_clickhouse_upload_id }}/fail"
-```
+```

docker_push.sh

@@ -5,6 +5,8 @@ echo "${DOCKER_PASSWORD}" | docker login -u alexakulov --password-stdin
 docker push "alexakulov/clickhouse-backup:master"
 
 if [ "$1" == "release" ]; then
-    docker tag "alexakulov/clickhouse-backup:latest" "alexakulov/clickhouse-backup:${TRAVIS_TAG//v}"
+    docker tag "alexakulov/clickhouse-backup:master" "alexakulov/clickhouse-backup:${TRAVIS_TAG//v}"
+    docker tag "alexakulov/clickhouse-backup:master" "alexakulov/clickhouse-backup:latest"
     docker push "alexakulov/clickhouse-backup:${TRAVIS_TAG//v}"
+    docker push "alexakulov/clickhouse-backup:latest"
 fi