Root check and docker image integration

backup.cfg

@@ -25,6 +25,8 @@ target_host="127.0.0.1" # rsync target host
 target_user="backup" # rsync target user
 target_key='/home/xyz/.ssh/rsync' # rsync key
 #Docker
+docker_enabled=false # will you use docker backup
+docker_images=false # backup docker images
 #Docker volumes
 #Rsync
 #Daily cron

main.sh

@@ -22,6 +22,11 @@ source "$config"
 
 echo "Configuration file loaded" >&2
 
+if [ "$EUID" -ne 0 ]
+  then echo "Please run as root"
+  exit
+fi
+
 function makedir {
 timestamp=$(date +%Y%m%d_%H%M)
 mkdir /tmp/backify-$timestamp
@@ -97,6 +102,23 @@ function push {
     fi
 }
 
+function dockerbackup {
+    if [ "docker_enabled" = true] then
+        if [ "docker_images" = true] then
+            echo "Backing up Docker images..." >&2
+            for i in `docker inspect --format='{{.Name}}' $(docker ps -q) | cut -f2 -d\/`
+            do container_name=$i
+            echo -n "$container_name - "
+            container_image=`docker inspect --format='{{.Config.Image}}' $container_name`
+            mkdir -p $tmpdir/containers/$container_name
+            save_dir="$tmpdir/containers/$container_name/$container_name-image.tar"
+            docker save -o $save_dir $container_image
+            echo "Finished" >&2
+done
+        fi
+    fi
+}
+
 function runbackup {
     if [ "enabled" = true] then
         # step 1 : create directory
@@ -107,6 +129,8 @@ function runbackup {
         vhostbackup
         # step 4: log backup
         logbackup
+        # step 5: docker backup
+        dockerbackup
         # archive data
         echo "Creating backup archive..." >&2
         tar -czvf /opt/backify-$timestamp.tar.gz $tmpdir