Update Scripts/container-size.sh

Remove layers except merged, add docu.

Scripts/container-size.sh

@@ -1,47 +1,36 @@
 #!/bin/bash
 
-clear
-
 # Optional: prune Docker
 docker volume prune -af 2>&1 > /dev/null
 docker image prune -af 2>&1 > /dev/null
 docker builder prune -af 2>&1 > /dev/null
 
+# Set field seperator to new line
 IFS=$'\n'
 
+# Get 25 largest directories in ./overlay2
+clear
 echo "Searching for large directories.."
-overlay=($(du -sh /var/lib/docker/overlay2/* | sort -hr | head -n 10))
+overlay=($(du -sh /var/lib/docker/overlay2/* | sort -hr | head -n 25))
 
 clear
 echo "Containers that use a lot of space:"
 
+# Iterate through lines
 for layer in "${overlay[@]}"; do
+
+   # Extract size
    size=$(echo $layer | awk '{print $1}')
+
+   # Extract layer ID
    layer_id=$(echo $layer | awk '{print $2}' | sed 's|/var/lib/docker/overlay2/||g')
 
-   # Check MergeDir
-   container_name=$( docker inspect $(docker ps -qa) |  jq -r 'map([.Name, .GraphDriver.Data.MergedDir]) | .[] | "\(.[0])\t\(.[1])"' \
+   # Extract container name
+   container_name=$(docker inspect $(docker ps -qa) |  jq -r 'map([.Name, .GraphDriver.Data.MergedDir]) | .[] | "\(.[0])\t\(.[1])"' \
     | grep -w $layer_id | awk '{print $1}' | sed 's|/||g')
 
-   # Check UpperDir
-   if [[ -z $container_name ]]; then
-      container_name=$( docker inspect $(docker ps -qa) |  jq -r 'map([.Name, .GraphDriver.Data.UpperDir]) | .[] | "\(.[0])\t\(.[1])"' \
-    | grep -w $layer_id | awk '{print $1}' | sed 's|/||g')
-   fi
-
-   # Check LowerDir
-   if [[ -z $container_name ]]; then
-      container_name=$( docker inspect $(docker ps -qa) |  jq -r 'map([.Name, .GraphDriver.Data.LowerDir]) | .[] | "\(.[0])\t\(.[1])"' \
-    | grep -w $layer_id | awk '{print $1}' | sed 's|/||g')
-   fi
-
-   # Check WorkDir
-   if [[ -z $container_name ]]; then
-      container_name=$( docker inspect $(docker ps -qa) |  jq -r 'map([.Name, .GraphDriver.Data.WorkDir]) | .[] | "\(.[0])\t\(.[1])"' \
-    | grep -w $layer_id | awk '{print $1}' | sed 's|/||g')
-   fi
-
+   # Filter out layers without container
    if [[ -n $container_name ]]; then
-      echo "$size $container_name"
+      echo "$size $container_name ($layer_id)"
    fi
 done