Can t create a docker image for COPY failed stat var lib docker tmp docker-builder error

Question

I want to create a docker image  This is my work directory  Dockerfile in   test json   test py  And this is my Dockerfile   COPY   test json  home test json COPY   test py  home test py  RUN python test py   When i launch this command   docker build -f Dockerfile in -t 637268723 test 1 0    It gives me this error     Step 1 5   COPY   test json  home test json  --- gt  Using cache  --- gt  6774cd225d60  Step 2 5   COPY   test py  home test py  COPY failed  stat  var lib docker tmp docker-builder428014112 test py    no such file or directory    Can anyone help me

User · Answer

The way docker look for file is from the current directory i.e. if your command is

COPY target/xyz.jar app.jar

ADD target/xyz.jar app.jar

The xyz jar should be in the current/target directory - here current is the place where you have your docker file. So if you have docker in a different dir. its better bring to main project directory and have a straight path to the jar being added or copied to the image.

User · Answer

Q1  Check your  dockerignore file in build path  the files or dir you want to copy may be in the ignore file list  Q2  The COPY directive is based on the context in which you are building the image  so be aware of any problems with the directory where you are currently building the image  See  https   docs docker com engine reference builder  copy

User · Answer

lt plugin gt       lt groupId gt io fabric8 lt  groupId gt        lt artifactId gt docker-maven-plugin lt  artifactId gt       lt configuration gt         lt images gt           lt image gt             lt name gt imagenam lt  name gt             lt alias gt dockerfile lt  alias gt             lt build gt               lt  -- filter gt   lt  filter-- gt               lt dockerFileDir gt dockerfile loaction lt  dockerFileDir gt               lt tags gt               lt tag gt latest lt  tag gt               lt tag gt 0 0 1 lt  tag gt               lt  tags gt             lt  build gt             lt run gt               lt ports gt                 lt port gt 8080 8080 lt  port gt               lt  ports gt             lt  run gt           lt  image gt         lt  images gt       lt  configuration gt     lt  plugin gt

User · Answer

The following structure in docker-compose yaml will allow you to have the Dockerfile in a subfolder from the root   version   3  services    db      image  postgres 11     environment        - PGDATA  var lib postgresql data pgdata     volumes        - postgres-data  var lib postgresql data     ports        - 127 0 0 1 5432 5432     web      build         context             dockerfile  dockerfiles Dockerfile       command            Then  in your Dockerfile  which is in the same directory as docker-compose yaml  you can do the following   ENV APP HOME  home  RUN mkdir -p   APP HOME     Copy the file to the directory in the container COPY test json   APP HOME  test json COPY test py   APP HOME  test py    Browse to that directory created above WORKDIR   APP HOME    You can then run docker-compose from the parent directory like   docker-compose -f   dockerfiles docker-compose yaml build --no-cache

User · Answer

Make sure the context you build your image with is set correctly  You can set the context when building as an argument  Example  docker build -f   Dockerfile    where      is the context in this example

User · Answer

Check if there s a  dockerignore file  if so  add    mydir test json  mydir test py

User · Answer

When using the Docker compose files  publish  publishes to obj Docker Publish  When I copied my files there and pointed my Dockerfile to this directory  as generated   it works

User · Answer

In my case  I had to put all my project files into a subdirectory app - inside app directory we have the following        package js        src         assets Dockerfile   Then I copied files in his way COPY app

User · Answer

You should put those files into the same directory with Dockerfile

User · Answer

I had such error while trying to build a docker image and push to the container registry  Inside my docker file I tried to copy a jar file from target folder and try to execute it with java -jar  command  I was solving the issue by removing  jar file and target folder from  gitignore file

User · Answer

I had to use the following command to start the build   docker build

User · Answer

I was also facing the same  I moved my docker file to root of the project  then it worked

User · Answer

Another potential cause is that docker will not follow symbolic links by default  i e don t use ln -s

User · Answer

In your case removing    should solve the issue  I had another case wherein I was using a directory from the parent directory and docker can only access files present below the directory where Dockerfile is present  so if I have a directory structure  root dir and Dockerfile  root dir Dockerfile  I cannot copy do the following   COPY root src  opt src

User · Answer

Removing    from source path should resolve your issue    COPY test json  home test json  COPY test py  home test py

User · Answer

I had the same issue with a  tgz file    It was just about the location of the  file  Ensure the  file is in the same directory of the Dockerfile   Also ensure the  dockerignore file directory doesn t exclude the  file regex pattern

User · Answer

Here is the reason why it happens  i e  your local directory in the host OS where you are running the docker should have the file  otherwise you get this error  One solution is to   use RUN cp  lt src gt   lt dst gt  instead of  COPY  lt src gt   lt dst gt   then run the command it works

User · Answer

In my case  it was the comment line that was messing up the COPY command   I removed the comment after the COPY command and placed it to a dedicated line above the command  Surprisingly it resolved the issue   Faulty Dockerfile command  COPY qt-downloader         https   github com engnr qt-downloader - gt  contains the script to auto download qt for different architectures and versions   Working Dockerfile command    https   github com engnr qt-downloader - gt  contains the script to auto download qt for different architectures and versions COPY qt-downloader          Hope it helps someone

User · Answer

This may help someone else facing similar issue   Instead of putting the file floating in the same directory as the Dockerfile  create a dir and place the file to copy and then try   COPY mydir test json  home test json COPY mydir test json  home test json

[python] Can't create a docker image for COPY failed: stat /var/lib/docker/tmp/docker-builder error

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