Missing Zypper Clean

Query id: 38300d1a-feb2-4a48-936a-d1ef1cd24313
Query name: Missing Zypper Clean
Platform: Dockerfile
Severity: Low
Category: Best Practices
CWE: 459
URL: Github

Description¶

Reduce layer and image size by deleting unneeded caches after running zypper
Documentation

Code samples¶

Code samples with security vulnerabilities¶

Positive test num. 1 - dockerfile file

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

Code samples without security vulnerabilities¶

Negative test num. 1 - dockerfile file

FROM busybox:1.0
RUN zypper install -y httpd=2.4 && zypper clean
HEALTHCHECK CMD curl --fail http://localhost:3000 || exit 1

Negative test num. 2 - dockerfile file

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

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