Metadata

Id: dockerfile-missing-zypper-non-interactive-switch

Platform: Dockerfile

Severity: Medium

Category: Supply-Chain

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Description

RUN instructions that invoke the zypper package manager must include a non-interactive switch to avoid interactive prompts that can stall automated builds. This ensures package installs, removals, and patches complete reliably in CI/CD pipelines. Without this switch, images may be built with missing packages or without applied security updates.

Check Dockerfile RUN commands that call zypper subcommands (for example, in, remove/rm, source-install/si, and patch) and ensure the command includes either -y or --no-confirm. Any RUN command invoking zypper without one of these switches will be flagged.

Secure examples:

RUN zypper --no-confirm install ca-certificates
RUN zypper -y patch

Compliant Code Examples

FROM busybox:1.0
RUN zypper install -y httpd=2.4.46 && zypper clean
HEALTHCHECK CMD curl --fail http://localhost:3000 || exit 1

FROM golang:1.16 AS builder
WORKDIR /go/src/github.com/foo/href-counter/
RUN go get -d -v golang.org/x/net/html  
COPY app.go    ./
RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o app .
RUN zypper install httpd && zypper clean

FROM alpine:latest  
RUN apk --no-cache add ca-certificates
WORKDIR /root/
COPY --from=builder /go/src/github.com/foo/href-counter/app ./
CMD ["./app"]
RUN useradd -ms /bin/bash patrick

USER patrick

Non-Compliant Code Examples

FROM busybox:1.0
RUN zypper install httpd && zypper clean
HEALTHCHECK CMD curl --fail http://localhost:3000 || exit 1