docker invalid reference format

Question

I m following this tutorial  https   medium com towards-data-science number-plate-detection-with-supervisely-and-tensorflow-part-1-e84c74d4382c and they use docker  When I tried to run docker  inside the run sh script   docker run       -p 8888 8888      -v  pwd     src  src       -v  pwd     data  data -w  src supervisely anpr       --rm       -it       bash  I got the error  docker  invalid reference format   I spent 2 hours and I can t really understand what s wrong  Any idea really appreciated

User · Answer

I had a similar problem  Issue I was having was   pwd  has a space in there which was throwing docker run off      Change the directory name to not have spaces in there  and it should work if this is the problem

User · Answer

The first argument after the  run  that is not a flag or parameter to a flag is parsed as an image name  When that parsing fails  it tells you the reference format  aka image name  but could be an image id  pinned image  or other syntax  is invalid  In your command    docker run -p 8888 8888 -v  pwd     src  src -v  pwd     data  data -w  src supervisely anpr --rm -it bash   The image name  supervisely anpr  is valid  so you need to look earlier in the command  In this case  the error is most likely from pwd outputting a path with a space in it  Everything after the space is no longer a parameter to -v and docker tries to parse it as the image name  The fix is to quote the volume parameters when you cannot guarantee it is free of spaces or other special characters   When you do that  you ll encounter the next error   executable not found   Everything after the image name is parsed as the command to run inside the container  In your case  it will try to run the command --rm -it bash which will almost certainly fail since --rm will no exist as a binary inside your image  You need to reorder the parameters to resolve that    docker run --rm -it -p 8888 8888 -v   pwd     src  src  -v   pwd     data  data  -w  src supervisely anpr  bash   I ve got some more details on these two errors and causes in my slides here  https   sudo-bmitch github io presentations dc2018 faq-stackoverflow-lightning html 29

User · Answer

I was executing the whole command in one line  as it was mentioned as such   docker run --name testproject-agent   -e TP API KEY  quot REPLACE WITH YOUR KEY quot    -e TP AGENT ALIAS  quot My First Agent quot    testproject agent latest  But its supposed to be a multiline command  and I copied the command line by line and pressed enter after every line and bam  it worked  Sometimes when you copy off of the web  the new-line character gets omitted  hence my suggestion to try manually introducing the new line

User · Answer

I had the same issue when I copy-pasted the command   Instead  when I typed-in the entire command  it worked   Good Luck

User · Answer

Found that using docker-compose config reported what the problem was   In my case  an override compose file with an entry that was overriding nothing

User · Answer

In powershell you should use   pwd  vs   pwd

User · Answer

I ran into this issue when I didn t have an environment variable set   docker push   repo   image name    tag    repo and image name were defined but tag wasn t   This resulted in docker push repo image name    Which threw the docker  invalid reference format

User · Answer

This also happens when you use development docker compose like the below  in production  You don t want to be building images in production as that breaks the ideology of containers  We should be deploying images     web      build        command  python manage py runserver 0 0 0 0 8000     volumes        -    code     ports        -  8000 8000    Change that to use the built image     web      command   bin bash run sh     image  registry voxcloud co za 9000 dyndns api web 0 1     ports        -  8000 8000

User · Answer

For others come to here  If you happen to put your docker command in a file  say run sh  check your line separator  In Linux  it should be LR  otherwise you would get the same error

[docker] docker : invalid reference format

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