Docker ADD giving error "No source files were specified"

Question

Dockerfile is failing on the following line:

ADD ./test-web-app/build/libs/test-web*.war /app/test-web.war

Error Step 8/29 : COPY ./test-web-app/build/libs/test-web*.war /app/micro-service.war No source files were specified

This is the first time I am working on Docker builds. How do I debug this issue? Is there a way to echo if the host file is existing by a command ?

It would be helpful to have a full(er) listing of the Dockerfile and directory structure you're working with. — Eric M. Johnson
– Eric M. Johnson, Commented Jan 29, 2019 at 16:50

mauricubo · Accepted Answer · 2019-01-29 17:36:40Z

5

be sure that the path of the file is accessible where the Dockerfile is. When you run the build, the . folder is where the Dockerfile is. So you directory structure has to be something similar to this:

.
..
Dockerfile
test-web-app (folder)

To be sure that the war file is accessible try to list the file (on your host machine) for example.

$ ls ./test-web-app/build/libs/test-web*.war

answered Jan 29, 2019 at 17:36

mauricubo

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2 Comments

Raj K Over a year ago

my dockerfile is actually two level deep. ~/test-web$ docker build -t xyz . -f infra/docker/Dockerfile the war is ~/test-web/test-web-app/build/libs folder

Raj K Over a year ago

i had a typo issue. i was doing the wrong ls and i had the wrong path in the docker file. thanks for the response

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