The following Dockerfile contains four COPY layers: COPY README.md ./ COPY package.json ./ COPY gulpfile.js ./ COPY __BUILD_NUMBER ./ How to copy these files using one layer instead? The following was tried: COPY [ “__BUILD_NUMBER ./”, “README.md ./”, “gulpfile ./”, “another_file ./”, ] 6 Answers 6
According to the Docker Compose’s compose-file documentation: depends_on – Express dependency between services. links – Link to containers in another service and also express dependency between services in the same way as depends_on. I don’t understand the purpose of linking to other containers so the difference between two options still seems quite difficult for me. … Read more
I’m trying to copy a number of files and folders to a docker image build from my localhost. The files are like this: folder1 file1 file2 folder2 file1 file2 I’m trying to make the copy like this: COPY files/* /files/ However, all files are placed in /files/ is there a way in Docker to keep … Read more
I have a docker container with some processes (uwsgi and celery) running inside. I want to create a celery user and a uwsgi user for these processes as well as a worker group that they will both belong to, in order to assign permissions. I tried adding RUN adduser uwsgi and RUN adduser celery to … Read more
In a Dockerfile, I have COPY . . I want to exclude an entire directory, in my case, node_modules directory. Something like this: COPY [all but **/node_modules/**] . Is this possible with Docker? 6 Answers 6 Create file .dockerignore in your docker build context directory (so in this case, most likely a directory that is … Read more
You can set image name when building a custom image, like this: docker build -t dude/man:v2 . # Will be named dude/man:v2 Is there a way to define the name of the image in Dockerfile, so I don’t have to mention it in the docker build command? 4 s 4 Tagging of the image isn’t … Read more
I’m confused about when should I use CMD vs RUN. For example, to execute bash/shell commands (i.e. ls -la) I would always use CMD or is there a situation where I would use RUN? Trying to understand the best practices about these two similar Dockerfile directives. 9 s 9 RUN is an image build step, … Read more
I am writing a Dockerfile. Is there a way to make comments in this file? Does Docker have a comment option that takes the rest of a line and ignores it? 7 s 7 You can use # at the beginning of a line to start a comment (whitespaces before # are allowed): # do … Read more
Closed. This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 1 year ago. The community is reviewing whether to reopen this question as of 3 days ago. Improve this question I have … Read more
I am following this link to create my first docker Image and it went successfully and now I am trying to push this Image into my docker repository from this link. But whenever I am trying to push this Image into repository , I got this type of error. denied: requested access to the resource … Read more
