Edition 0 Updated to asp. Net core 0

Line #1:
Begin a stage with a “small” runtime
-only base image, call it 
base
for reference. 
•
Line #2:
Create the 
/app
directory in the image. 
•
Line #3:
Expose port 
80
. 

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81 
CHAPTER 4 | Development process for Docker-based applications 
•
Line #5:
Begin a new stage with the “large” image for building/publishing. Call it 
build
for 
reference. 
•
Line #6:
Create directory 
/src
in the image. 
•
Line #7:
Up to line 16, copy referenced 
.csproj
project files to be able to restore packages later. 
•
Line #17:
Restore packages for the 
Catalog.API
project and the referenced projects. 
•
Line #18:
Copy 
all directory tree for the solution
(except the files/directories included in the 
.dockerignore
file) to the 
/src
directory in the image. 
•
Line #19:
Change the current folder to the 
Catalog.API
project. 
•
Line #20:
Build the project (and other project dependencies) and output to the 
/app
directory in 
the image. 
•
Line #22:
Begin a new stage continuing from the build. Call it 
publish
for reference. 
•
Line #23:
Publish the project (and dependencies) and output to the 
/app
directory in the image. 
•
Line #25:
Begin a new stage continuing from 
base
and call it 
final
. 
•
Line #26:
Change the current directory to