I was informed by AWS that I’ve used 25GB of my storage. I ran `du -h -a / | sort -n -r | head -n 10` to find out the biggest files and it’s looking like most of it is ~1MB and from Docker…?


```
~$ sudo du -h -a /  | sort -n -r | head -n 20
du: cannot access '/proc/...': No such file or directory
du: cannot access '/proc/...': No such file or directory
du: cannot access '/proc/...': No such file or directory
du: cannot access '/proc/...': No such file or directory
1021K    /snap/core18/1997/usr/lib/python3.6/pydoc_data
1021K    /snap/core18/1988/usr/lib/python3.6/pydoc_data
1020K    /var/lib/docker/overlay2/.../merged/venv/lib/python3.8/site-packages/gssapi/raw/ext_dce.cpython-38-x86_64-linux-gnu.so
1020K    /var/lib/docker/overlay2/.../diff/usr/local/lib/python3.8/site-packages/httptools/parser
1020K    /var/lib/docker/overlay2/.../diff/venv/lib/python3.8/site-packages/gssapi/raw/ext_dce.cpython-38-x86_64-linux-gnu.so
1020K    /var/lib/docker/overlay2/.../merged/usr/local/lib/python3.8/site-packages/httptools/parser
1020K    /var/lib/docker/overlay2/.../merged/usr/local/lib/python3.8/site-packages/httptools/parser
1020K    /usr/share/perl/5.30.0/unicore/Name.pl
1020K    /usr/share/locale/it
1020K    /usr/sbin/tcpdump
1020K    /usr/lib/modules/5.4.0-1038-aws/kernel/arch/x86/kvm/kvm.ko
1016K    /var/lib/docker/overlay2/.../diff/var/lib
1016K    /var/lib/docker/overlay2/.../diff/venv
1016K    /var/lib/docker/overlay2/.../merged/usr/local/include
1016K    /var/lib/docker/overlay2/.../merged/usr/local/include
1016K    /var/lib/docker/overlay2/.../diff/usr/local/include
1016K    /usr/share/locale/sv
1012K    /var/lib/docker/overlay2/.../merged/venv/lib/python3.8/site-packages/werkzeug
1012K    /var/lib/docker/overlay2/.../diff/usr/share/locale/de
1012K    /var/lib/docker/overlay2/.../merged/usr/local/include/python3.8
```

Running `sudo docker system df` shows that docker with all the images, volumes, etc. only uses < 5GB,

```
~$ sudo docker system df
TYPE          TOTAL   ACTIVE  SIZE    RECLAIMABLE
Images         5       5     2.224GB  1.049GB (47%)
Containers     7       7     1.312MB  0B (0%)
Local Volumes  4       4     50.12MB  0B (0%)
Build Cache    0       0     0B       0B
```

How can I figure out how my server is using 25 GB?