Dockerfile arm architecture #1892

Activity

1. PeterSurda

   assigned

   shekhar-cis

   on Dec 1, 2021
2. PeterSurda

   added

   buildRelated to building or build systemRelated to building or build system

   on Dec 1, 2021
3. PeterSurda commented on Dec 9, 2021

   

   PeterSurda

   on Dec 9, 2021

   Last edited by PeterSurda

   MemberAuthor

   More actions

   Update on how to deal with this:

   • it helps if you use BuildKit for building. You can enable it by export DOCKER_BUILDKIT=1 before running docker build
   • if BuildKit is enabled, add a new line with ARG TARGETARCH just after the top FROM
   • if BuildKit isn't enabled, you need to add the TARGETARCH argument into the command line when executing the command line manually
   • then the $TARGETARCH argument in the rest of the Dockerfile can be used to distinguish between amd64 and arm64. I haven't tested other platforms.
   • since Dockerfile syntax doesn't support branching, the way I found to do this is to have a per-architecture stage, for example

   # default
   ARG TARGETARCH=amd64
   
   # Intel and AMD
   FROM base AS deps-amd64
   RUN apt install bla bla
   
   # ARM
   FROM base AS deps-arm64
   RUN apt install bla bla
   
   # next stage
   FROM deps-$TARGETARCH AS travis
   RUN blabla