Fix interface building

[reubano]

Overview

Building the interface service fails with the following error

⚡ docker-compose -f local.yml build interface
...
Step 3/9 : RUN sed -i 's/\r//' /entrypoint.sh
 ---> Running in 4e5814af28da
container_linux.go:265: starting container process caused "exec: \"/bin/sh\": stat /bin/sh: no such file or directory"
ERROR: compose.cli.main.main: Service 'interface' failed to build: oci runtime error: container_linux.go:265: starting container process caused "exec: \"/bin/sh\": stat /bin/sh: no such file or directory"

Expected Behavior

Interface services should build without error

Technical details

• This bug first appears in #159 Docker: Reuse Caches #199
• Possibly related to exec: "/bin/sh": stat /bin/sh: no such file or directory moby/moby#5135
• Possibly specific to Docker For Mac
• Docker For Mac v17.09.0-ce-mac35
• macOS 10.13

$ docker --version
Docker version 17.09.0-ce, build afdb6d4

Acceptance criteria

• docker-compose -f local.yml build should complete without error.
• docker-compose -f local.yml build interface should complete without error.

NOTE: All PRs must follow the standard PR checklist.

[musale]

@reubano interestingly, I've done the build without any errors from the current master branch.
OS : Manjaro Linux
Docker version: 17.10.0-ce, build f4ffd2511c

My suggestion would be you try with upgraded docker?

[reubano]

Ok, so I tried it again and now everything works! Turns out the solution I implemented to solve another problem, ending up fixing this one as well. Thanks!