Docker Compose Failing for command - docker

Question

Dockerfile:
FROM hseeberger/scala-sbt:8u222_1.3.5_2.13.1
WORKDIR /code/SimpleStocks
COPY ./SimpleStocks .
RUN sbt dist
WORKDIR /code/SimpleStocks/target/universal
RUN unzip simplestocks-0.0.1.zip
WORKDIR /code/SimpleStocks/target/universal/simplestocks-0.0.1
CMD ["bin/simplestocks"]
docker-compose.yml:
version: "3.7"
services:
app:
container_name: simple-stocks
image: simple-stocks:1.0.0
build: .
ports:
- '9000:9000'
volumes:
- .:/code
links:
- pgdb1
pgdb1:
image: postgres
environment:
POSTGRES_DB: simple_stocks
POSTGRES_USER: postgres
POSTGRES_PASSWORD: postgres
volumes:
- pgdb1data:/var/lib/postgresql/data/
- ./docker_postgres_init.sql:/docker-entrypoint-initdb.d/docker_postgres_init.sql
ports:
- '5432:5432'
volumes:
pgdb1data:
When I manually run simple-stocks container using docker run -it {imageId}, I am able to run it successfully; but, on doing docker compose up I am receiving:
Error response from daemon: OCI runtime create failed:
container_linux.go:380: starting container process caused: exec:
"bin/simplestocks": stat bin/simplestocks: no such file or directory:
unknown

Answer 1

Your Dockerfile is building the application in /code/SimpleStocks/target/universal/simplestocks-0.0.1, but then your Compose file bind-mounts a host directory over /code, which hides everything the Dockerfile does. The bind mount is unnecessary and deleting it will resolve this issue.
Bind-mounting a host directory over your entire built application usually is not a best practice. I most often see it trying to convince Docker to emulate a local development environment, but even that approach doesn't make sense for a compiled language like Scala.
You can safely remove the volumes: block. The obsolete links: can also be removed. You don't need to manually specify container_name:, nor do you need to specify both build: and image: unless you're planning to push the built image to a registry. That would reduce the Compose setup to just:
version: '3.8'
services:
app:
build: .
ports:
- '9000:9000'
pgdb1: (as in the question originally)
volumes:
pgdb1data: