Docker run file not found

Question

I am trying to write a simple dockerfile that wraps around a bash script. The docker file looks like this:

FROM openjdk:8-jre-alpine
COPY . /build/demo
WORKDIR /build/demo/
RUN pwd; ls
RUN chmod +x run-demo.sh
RUN run-demo.sh 1 zk

and the context file directory (slimmed down) looks like:

Dockerfile
build
- demo
  - run-demo.sh

I have a step RUN pwd; ls which outputs

RUN pwd; ls
 ---> Running in f22ce9175cee
/build/demo
run-demo.sh

and yet once the docker build . reaches the last command, it says /bin/sh: run-demo.sh: not found. How is that possible? Thank you

edit: and the script begins with !#/bin/bash if thats relevant edit2:

RUN pwd; ls -l
 ---> Running in 16fbda2c19e1
/build/demo
-rwxr-xr-x    1 root     root           775 Jun 12 21:14 run-demo.sh
Removing intermediate container 16fbda2c19e1
 ---> bf8ada47953a
Step 7/7 : RUN ./run-demo.sh 1 zk
 ---> Running in daccefe3c895
/bin/sh: ./run-demo.sh: not found

score 2 · Answer 1 · answered Jun 13 '18 at 18:57

2

I have solved it. openjdk:8-jre-alpine, my base image, does not pack bash

answered Jun 13 '18 at 18:57

Jason D'Amour

31
1
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score 0 · Answer 2 · answered Jun 13 '18 at 03:50

0

To run a program directly, as you are trying, it must be in one of the directories listed in the PATH variable. To run a file elsewhere you need to explicitly provide the path to it, as in either ./run-demo.sh or /build/demo/run-demo.sh.

answered Jun 13 '18 at 03:50

l0b0

1,141
1
8
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This was how I first wrote my docker file, it has no effect on the error – Jason D'Amour Jun 13 '18 at 15:54
I added an edit to the question – Jason D'Amour Jun 13 '18 at 16:12

Docker run file not found

2 Answers2