Multiple ENTRYPOINT Instructions Listed

Query id: 6938958b-3f1a-451c-909b-baeee14bdc97
Query name: Multiple ENTRYPOINT Instructions Listed
Platform: Dockerfile
Severity: High
Category: Build Process
URL: Github

Description¶

There can only be one ENTRYPOINT instruction in a Dockerfile. Only the last ENTRYPOINT instruction in the Dockerfile will have an effect
Documentation

Code samples¶

Code samples with security vulnerabilities¶

Postitive test num. 1 - dockerfile file

FROM golang:1.7.3
WORKDIR /go/src/github.com/alexellis/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 .

FROM alpine:latest  
RUN apk --no-cache add ca-certificates
WORKDIR /root/
COPY --from=0 /go/src/github.com/alexellis/href-counter/app .
ENTRYPOINT [ "/opt/app/run.sh", "--port", "8080" ]
ENTRYPOINT [ "/opt/app/run.sh", "--port", "8000" ]

Code samples without security vulnerabilities¶

Negative test num. 1 - dockerfile file

FROM golang:1.7.3
WORKDIR /go/src/github.com/alexellis/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 .
ENTRYPOINT [ "/opt/app/run.sh", "--port", "8080" ]

FROM alpine:latest  
RUN apk --no-cache add ca-certificates
WORKDIR /root/
COPY --from=0 /go/src/github.com/alexellis/href-counter/app .
ENTRYPOINT [ "/opt/app/run.sh", "--port", "8080" ]