Add restore

Dockerfile

@@ -1,14 +1,15 @@
-FROM debian:jessie
+FROM alpine:3.4
 MAINTAINER Vitalii Vokhmin <[email protected]>
 
+RUN apk add --no-cache curl bzip2
+COPY backup.sh /bin/backup.sh
+COPY restore.sh /bin/restore.sh
+RUN chmod +x /bin/backup.sh /bin/restore.sh
+
 ENV VOLUME_MOUNT_POINT '/data'
 ENV ARCHIVE_NAME_PREFIX 'volume_container'
 ENV FTP_PATH ''
 ENV FTP_USER 'anonymous'
 ENV FTP_PASSWORD ''
 
-RUN apt-get update && apt-get install -y curl bzip2 && apt-get clean && rm -rf /var/lib/apt/lists
-
-ADD upload_archive.sh /bin/upload_archive.sh
-RUN chmod +x /bin/upload_archive.sh
-CMD [ "/bin/upload_archive.sh" ]
+CMD [ "/bin/backup.sh" ]

README.md

@@ -1,5 +1,5 @@
 # volume-ftp-backup
-Docker image for simple volumes backup over FTP.
+Docker image for simple volumes backup/restore over FTP.
 
 # Description
 Image with a simple script that archives the data from the Docker volume
@@ -9,14 +9,27 @@ Uses user provided archive name prefix + unix timestamp as suffix for the filena
 I. e. `volume_container-123456789.tar.bz2`.
 
 # Usage
+
+## Backup
 Image accepts following environment variables:
 - `VOLUME_MOUNT_POINT` - path where volume is mounted. Default is `/data`
 - `ARCHIVE_NAME_PREFIX` - prefix for archive file name. Default is `volume_container`
 - `FTP_PATH` - full path to FTP folder. I. e. `ftp://example.com/path/to/storage/`
 - `FTP_USER` - FTP username. Default is `anonymous`
 - `FTP_PASSWORD` - FTP password for authentication
 
-## Example
+### Example
 ```bash
 docker run --rm -v my_shiny_volume:/data -e ARCHIVE_NAME_PREFIX='my_shiny_backup' -e FTP_PATH='ftp://example.com/backups/shiny_folder/' -e FTP_USER='user' -e FTP_PASSWORD='secret' vit1/volume-ftp-backup
 ```
+
+## Restore
+- `VOLUME_MOUNT_POINT` - path where volume is mounted. Default is `/data`
+- `FTP_PATH` - full path to archive. I. e. `ftp://example.com/path/to/storage/volume_container_1234.tar.bz2`
+- `FTP_USER` - FTP username. Default is `anonymous`
+- `FTP_PASSWORD` - FTP password for authentication
+
+### Example
+```bash
+docker run --rm -v my_shiny_volume:/data -e -e FTP_PATH='ftp://example.com/backups/shiny_folder/volume_container_1234.tar.bz2' -e FTP_USER='user' -e FTP_PASSWORD='secret' vit1/volume-ftp-backup restore.sh
+```

upload_archive.sh → backup.sh

@@ -1,4 +1,5 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
+set -x
 
 # Required env vars:
 #

restore.sh

@@ -0,0 +1,14 @@
+#!/usr/bin/env sh
+set -e
+
+# Required env vars:
+#
+# $VOLUME_MOUNT_POINT
+# $FTP_PATH
+# $FTP_USER
+# $FTP_PASSWORD
+
+cmd="curl $FTP_PATH --user '$FTP_USER:$FTP_PASSWORD' -o /tmp/archive.tar.bz2"
+eval "$cmd"
+tar -jxC / -f /tmp/archive.tar.bz2
+rm /tmp/archive.tar.bz2