The fundamental problem occurs because Docker's run
command doesn't execute commands through a shell by default. When you try to chain commands with semicolons like cd /path; ./script
, Docker interprets the entire string as a single executable name rather than a shell command sequence.
Your successful interactive approach works because /bin/bash
creates a proper shell environment that understands command chaining:
docker run -it ubuntu/decomposer /bin/bash -c "cd /local/deploy/decomposer && ./decomposer-4-15-2014"
Here are three robust approaches to solve this problem:
1. Using Explicit Shell Invocation
docker run -P ubuntu/decomposer /bin/sh -c "cd /local/deploy/decomposer && ./decomposer-4-15-2014"
2. Leveraging Docker's WORKDIR Instruction
In your Dockerfile, you can set the working directory permanently:
FROM ubuntu/decomposer
WORKDIR /local/deploy/decomposer
CMD ["./decomposer-4-15-2014"]
3. Using the -w Flag for Runtime Directory
docker run -P -w /local/deploy/decomposer ubuntu/decomposer ./decomposer-4-15-2014
For complex scenarios, consider these patterns:
Environment Variables with Directory Paths
docker run -e APP_DIR=/local/deploy/decomposer \
ubuntu/decomposer \
/bin/sh -c "cd \$APP_DIR && ./decomposer-4-15-2014"
Multi-command Entrypoint Scripts
Create an entrypoint.sh:
#!/bin/sh
cd /local/deploy/decomposer
exec "$@"
Then in Dockerfile:
COPY entrypoint.sh /
ENTRYPOINT ["/entrypoint.sh"]
CMD ["./decomposer-4-15-2014"]
When troubleshooting directory issues in Docker:
- Use
docker exec -it container_id ls /path
to verify directory contents - Check default working directory with
docker inspect --format='{{.Config.WorkingDir}}' image_name
- For permission issues, add
--user
flag to run commands
When you execute docker run
with a command string, Docker doesn't interpret it through a shell by default. This explains why your attempt with cd /local/deploy/decomposer; ./decomposer-4-15-2014
fails - Docker tries to execute the entire string as a single executable.
# This doesn't work because Docker looks for a single executable
docker run ubuntu/decomposer "cd /path && ./script"
Solution 1: Use Shell Form with -c Flag
The most straightforward approach is to explicitly invoke a shell:
docker run ubuntu/decomposer /bin/sh -c "cd /local/deploy/decomposer && ./decomposer-4-15-2014"
Solution 2: Set Working Directory in Dockerfile
For production deployments, define the working directory in your Dockerfile:
FROM ubuntu/decomposer
WORKDIR /local/deploy/decomposer
CMD ["./decomposer-4-15-2014"]
Solution 3: Use --workdir Flag (Docker 17.05+)
Modern Docker versions support runtime working directory specification:
docker run --workdir /local/deploy/decomposer ubuntu/decomposer ./decomposer-4-15-2014
If your application depends on relative paths, consider these approaches:
# Option 1: Rewrite paths in the application
docker run -v /host/path:/container/path --workdir /container/path app-image
# Option 2: Use entrypoint script
#!/bin/bash
cd /required/path && exec "$@"
- Verify paths exist in container:
docker run --rm ubuntu/decomposer ls -la /local/deploy/decomposer
- Check default working directory:
docker run --rm ubuntu/decomposer pwd
- Test shell interpretation:
docker run --rm ubuntu/decomposer /bin/sh -c "echo $PWD"