Is Rosetta required for arm images defined in a Dockerfile?

[mac-quantum]

λ container build -t container-name .
Error: unknown: "Error Domain=VZErrorDomain Code=2 "Rosetta is not installed" UserInfo={NSLocalizedFailure=Invalid virtual machine configuration., NSLocalizedFailureReason=Rosetta is not installed}"

I receive this error even if I explicitly mention the architecture with --arch arm64 is Rosetta a requirement even for arm images?

Originally posted by @maclong9 in #85

[dcantah]

Shouldn't be, I can take a look at what might be going wrong

[mac-quantum]

# ================================
# Build image
# ================================
FROM swift:6.1-jammy as build

# Install OS updates
RUN export DEBIAN_FRONTEND=noninteractive DEBCONF_NONINTERACTIVE_SEEN=true \
    && apt-get -q update \
    && apt-get -q dist-upgrade -y \
    && apt-get install -y libjemalloc-dev \
    && rm -rf /var/lib/apt/lists/*

# Set up a build area
WORKDIR /build

# First just resolve dependencies.
# This creates a cached layer that can be reused
# as long as your Package.swift/Package.resolved
# files do not change.
COPY ./Package.* ./
RUN swift package resolve

# Copy entire repo into container
COPY . .

# Build everything, with optimizations, with static linking, and using jemalloc
RUN swift build -c release \
    --static-swift-stdlib \
    -Xlinker -ljemalloc

# Switch to the staging area
WORKDIR /staging

# Copy main executable to staging area
RUN cp "$(swift build --package-path /build -c release --show-bin-path)/App" ./

# Copy static swift backtracer binary to staging area
RUN cp "/usr/libexec/swift/linux/swift-backtrace-static" ./

# Copy resources bundled by SPM to staging area
RUN find -L "$(swift build --package-path /build -c release --show-bin-path)/" -regex '.*\.resources$' -exec cp -Ra {} ./ \;

# Copy any resouces from the public directory if the directories exist
# Ensure that by default, neither the directory nor any of its contents are writable.
RUN [ -d /build/public ] && { mv /build/public ./public && chmod -R a-w ./public; } || true

# ================================
# Run image
# ================================
FROM ubuntu:jammy

# Make sure all system packages are up to date, and install only essential packages.
RUN export DEBIAN_FRONTEND=noninteractive DEBCONF_NONINTERACTIVE_SEEN=true \
    && apt-get -q update \
    && apt-get -q dist-upgrade -y \
    && apt-get -q install -y \
      libjemalloc2 \
      ca-certificates \
      tzdata \
# If your app or its dependencies import FoundationNetworking, also install `libcurl4`.
      # libcurl4 \
# If your app or its dependencies import FoundationXML, also install `libxml2`.
      # libxml2 \
    && rm -r /var/lib/apt/lists/*

# Create a hummingbird user and group with /app as its home directory
RUN useradd --user-group --create-home --system --skel /dev/null --home-dir /app hummingbird

# Switch to the new home directory
WORKDIR /app

# Copy built executable and any staged resources from builder
COPY --from=build --chown=hummingbird:hummingbird /staging /app

# Provide configuration needed by the built-in crash reporter and some sensible default behaviors.
ENV SWIFT_BACKTRACE=enable=yes,sanitize=yes,threads=all,images=all,interactive=no,swift-backtrace=./swift-backtrace-static

# Ensure all further commands run as the hummingbird user
USER hummingbird:hummingbird

# Let Docker bind to port 8080
EXPOSE 8080

# Start the Hummingbird service when the image is run, default to listening on 8080 in production environment
ENTRYPOINT ["./App"]
CMD ["--hostname", "0.0.0.0", "--port", "8080", "--migrate"]

This is the Dockerfile in question

[wmorgue]

Bump. Same for me:

Error: unknown: "Error Domain=VZErrorDomain Code=2 "Rosetta is not installed"
UserInfo={NSLocalizedFailure=Invalid virtual machine configuration., NSLocalizedFailureReason=Rosetta is not installed}"

[alan-zhang-22]

Same for me even using the web-test docker file specified in the Tutorial.

[Santi1965]

Same for me even using the web-test docker file specified in the Tutorial.

Same for me with the Tutorial

[TofPlay]

% container build --tag web-test --file Dockerfile .
Error: unknown: "Error Domain=VZErrorDomain Code=2 "Rosetta is not installed" UserInfo={NSLocalizedFailure=Invalid virtual machine configuration., NSLocalizedFa

Same for me with the tutorial too
My config: Apple M3 Max, macOS 15.5 (24F74)
Dockerfile:

FROM docker.io/python:alpine
WORKDIR /content
RUN apk add curl
RUN echo '<!DOCTYPE html><html><head><title>Hello</title></head><body><h1>Hello, world!</h1></body></html>' > index.html
CMD ["python3", "-m", "http.server", "80", "--bind", "0.0.0.0"]

[nilansaha]

Same for me with the web-test docker file specified in the tutorial. Expect at least the tutorial to be decent.

[dcantah]

Sorry for delay here. After checking we actually do ask for rosetta 100% of the time when spawning the container that handles building images. The reason this is done is because we can't know when it's launched (the builder is long running and spans more than just one build) whether the user may want to build an x86 image during its lifetime. If you don't have the linux variant of rosetta locally, asking for that option usually brings up a prompt for the user to accept that they'd like to download it however. Is this the case for anyone?

[Frizlab]

I don’t have the popup that asks for Rosetta.
Also I’d very much like to avoid installing Rosetta if possible, so can we have an option to say “I know I won’t use Rosetta?”
Thanks!

[dcantah]

so can we have an option to say “I know I won’t use Rosetta?”

Definitely possible! The no popup is peculiar though, you're just running the build in a terminal window? Nothing out of the ordinary?

[Frizlab]

Yup, just running container build . in a Terminal after container system start.

Container version: container CLI version 0.1.0 (build: release, commit: 0fd8692)
macOS version: 26.0 Beta (25A5279m)