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  • Dockerfile if else condition with external arguments
    Accepted answer does not cover "if else condition" part of the question Would be better to rename it to "Dockerfile with external arguments" if condition check didn't mean to be a requirement
  • How does docker-compose. yml and Dockerfile work together?
    The difference between Dockerfile and Compose file Docker can build images automatically by reading the instructions from a Dockerfile Compose is a tool for defining and running multi-container Docker applications The main difference is Dockerfile is used to build an image while Compose is to build and run an application
  • dockerfile - How do I set environment variables during the docker . . .
    I'm trying to set environment variables in docker container during the build but without success Setting them when using run command works but I need to set them during the build Dockerfile FROM
  • How to copy file from host to container using Dockerfile
    Build the image from the Dockerfile --> docker build -t myubuntu c:\docker\ Build the container from your new image myubuntu --> docker run -d -it --name myubuntucontainer myubuntu " sbin init" Connect to the newly created container --> docker exec -it myubuntucontainer bash Check if the text txt file is in the root --> ls You should see the file
  • How to get an environment variable value into Dockerfile during docker . . .
    To clarify @TomHennen's comment, piping the Dockerfile to docker build - is, specifically, what doesn't work when you reference relative paths from your Dockerfile, regardless of env var substitution
  • dockerfile - Is it possible to show the `WORKDIR` when building a . . .
    There's no builtin way for Docker to print the WORKDIR during a build You can inspect the final workdir for an image layer via the Config WorkingDir property in the inspect output: docker image inspect -f '{{ Config WorkingDir}}' {image-name} It's possible to view a Linux containers build steps workdir by printing the shells default working directory: RUN pwd or the shell often stores the
  • How to publish ports in docker files? - Stack Overflow
    There's a difference between expose and publish Expose means to open the port on the container side, publish means to open it on the Docker host to the outside world For example, if your docker run command had -p 80:8080, it's exposing port 8080 on the container and publishing port 80 on the host You can only really expose ports in the Dockerfile, if you want the flexibility to publish the
  • How to include files outside of Dockers build context?
    Same mental model here, think that all the files under this directory are moved over to the so-called context Similarly, just specify the Dockerfile that you want to copy to that same directory You can specify that using dockerfile The directory where your main content is located is the actual context to be set The docker-compose yml is as




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