[I] ARM64 Docker image build fails: protoc is downloaded for x86_64 only [texera]

["bobbai00 (via GitHub)" <gi...@apache.org>]

bobbai00 opened a new issue, #5571:
URL: https://github.com/apache/texera/issues/5571

   ### What happened?
   
   The scheduled **Build and push images** workflow fails on its `build-arm64` job. All three service image builds (`texera-web-application` / `texera-dashboard-service`, `computing-unit-master`, `computing-unit-worker`) fail at the same step — regenerating the Python protobuf bindings during the image build:
   
   ```
   bin/python-proto-gen.sh: line 35: /usr/local/bin/protoc: No such file or directory
   ERROR: ... did not complete successfully: exit code: 127
   ```
   
   **Cause:** the three Dockerfiles always download the **x86_64** `protoc` release, regardless of the target platform:
   
   ```dockerfile
   curl -fsSL -o /tmp/protoc.zip ".../protoc-${PROTOC_VERSION}-linux-x86_64.zip"
   ```
   
   On the ARM64 build the x86_64 binary can't execute (the misleading "No such file or directory" is the kernel failing to find the x86_64 ELF interpreter), so `bin/python-proto-gen.sh` aborts with exit code 127. The AMD64 build runs the binary natively and is unaffected — which is why only `build-arm64` fails.
   
   This surfaced after #5077, which stopped version-tracking the generated Python proto and began regenerating it during the image build, introducing this `protoc` download step.
   
   Affected files:
   - `bin/texera-web-application.dockerfile`
   - `bin/computing-unit-master.dockerfile`
   - `bin/computing-unit-worker.dockerfile`
   
   Expected: the image build downloads the `protoc` build matching the target architecture, so all platforms build successfully.
   
   ### How to reproduce?
   
   1. Run the **Build and push images** workflow (or wait for the scheduled run) so the `build-arm64` job executes — it fails at the `protoc` / `python-proto-gen.sh` step.
   2. Or locally on any host with buildx + QEMU:
      ```
      docker buildx build --platform linux/arm64 -f bin/computing-unit-worker.dockerfile .
      ```
      The build fails at the same step with `exit code: 127`.
   
   ### Version/Branch
   
   1.3.0-incubating-SNAPSHOT (main)
   
   ### Commit Hash (Optional)
   
   Introduced by d5bc8b7cf (#5077)
   
   ### Relevant log output
   
   ```shell
   #32 [build 11/19] RUN PROTOC_VERSION=$(cat bin/protoc-version.txt)     && curl -fsSL -o /tmp/protoc.zip ".../protoc-${PROTOC_VERSION}-linux-x86_64.zip" ... && bash bin/python-proto-gen.sh
   #32 2.275   inflating: /usr/local/bin/protoc
   #32 35.91 Successfully installed ... betterproto-2.0.0b7 black-26.5.1 jinja2-3.1.6 ...
   #32 36.75 bin/python-proto-gen.sh: line 35: /usr/local/bin/protoc: No such file or directory
   #32 ERROR: process "/bin/sh -c ..." did not complete successfully: exit code: 127
   ```
   


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Re: [I] ARM64 Docker image build fails: protoc is downloaded for x86_64 only [texera]

["bobbai00 (via GitHub)" <gi...@apache.org>]

bobbai00 closed issue #5571: ARM64 Docker image build fails: protoc is downloaded for x86_64 only
URL: https://github.com/apache/texera/issues/5571


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