What all we learnt in docker implemented in current Project

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Now regarding the docker size

what all we tried 

we got to know that there is one extra log file consisting inside code with is huge which is of no use to be checked In and used in docker compose

we expected that size will come down after deleting that file or by adding that file in dockerignore file, so that that file is not used when code is complied.

but even after removing the size remained same.

also,we have seen the size of that file when compressed is very low although when extracted it is huge

and even file is copied when a container runs, file is overwritten, hence reducing the size

We also need to check why docker size in AWS ECR repo and when we download it in my local is different marginally???? |

Because the file which is pushed in ECR is compressed and saved. whereas locally it is extracted and saved.


we tried to see what all is copied 

when we checked inside the docker image which we build after code build, the size of files in /app folder is around 75MB, but actual code was only 20 MB???

and we also saw that the file which we were curious about i.e. the error log file was overwritten when docker container runs.

Is there any way to check what all things are copied when docker compose is executed with a COPY command to copy all files inside the source folder.

Yes we tried to check what is being copied and it was working correctly 

the reason for Size of code and size of /app folder is due to other 3rd party DLL copied when project was build and published.


we can try to  build the project manually on local system and then check the size if it is same or different may be the file 

We tried using command to see the history of image and found the source code for version 2.2 was highest contributor to the size , when  checked with new version 3.0.0 the size was 40% Less [earlier 57 MB now 36 MB ]

I have also seen that now base image of ASP.core is not hosted on docker Hub but instead on azure MCR [Microsoft Container registry]


 

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