How to add image from within 'content' subfolder - pelican - pelican

Question

I got a structure
content/
├── applications
│   └── 2017
│   └── 08
│   └── 30
│   ├── article.md
│   └── forecast1.png
I want the img files to be same directories as the md files so that they can be put to:
ARTICLE_SAVE_AS = 'posts/{date:%Y}/{date:%b}/{date:%d}/{slug}/index.html'
I have STATIC_PATHS = ['static_files','content'] however, the
[alt]({attach}applications/2017/08/30/forecast1.png)
gives error:
WARNING: Unable to find `applications/2017/08/30/forecast1.png`, skipping url replacement.
How can I include image into my md file in this simple case?
EDIT
so I changed the config applications is my category to:
PATH = 'content'
STATIC_PATHS = ['static_files','applications/2017/08/30/img', 'applications/2017/09/01/img']
ARTICLE_PATHS = ['applications', 'cat2', 'cat3']
I also added the ! before the [alt]() and still the images are not copied over to output.
EDIT2
iT WORKS WHEN APPLY EDIT ABOVE AND CHANGE ({attach}img/forecast1.png)

Answer 1

This works for me (following this):
content/
├── p001
│ └── myArticle001.md
│ └── img001
│ └── myPic1.png
│ └── myPic2.png
├── p002
│ └── myArticle002.md
│ └── img002
│ └── myPic1.png
│ └── myPic2.png
In pelicanconfig.py set:
PATH = 'content'
STATIC_PATHS = ['p001','p002']
ARTICLE_PATHS = STATIC_PATHS
In the md-files set:
![pic_A1]({attach}img001/myPic1.png)
![pic_A2]({attach}img001/myPic2.png)
and
![pic_B1]({attach}img002/myPic1.png)
![pic_B2]({attach}img002/myPic2.png)
Probabley you missed a ! only at the begin of the command. So you might try this:
![alt]({attach}applications/2017/08/30/forecast1.png)
Or try this:
PATH = 'content'
STATIC_PATHS = ['applications']
ARTICLE_PATHS = STATIC_PATHS
...
![alt]({attach}2017/08/30/forecast1.png)