RUN Instruction Using 'cd' Instead of WORKDIR

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Description ¶

When using RUN command 'cd' should only be used for full path. For relative path make use of WORKDIR command instead.
Documentation

Code samples ¶

Code samples with security vulnerabilities ¶

Positive test num. 1 - dockerfile file

FROM nginx
ENV AUTHOR=Docker
RUN cd /../share/nginx/html
COPY Hello_docker.html /usr/share/nginx/html
CMD cd /usr/share/nginx/html && sed -e s/Docker/"$AUTHOR"/ Hello_docker.html > index.html ; nginx -g 'daemon off;'
FROM nginx
ENV AUTHOR=Docker
RUN cd ../share/nginx/html
COPY Hello_docker.html /usr/share/nginx/html
CMD cd /usr/share/nginx/html && sed -e s/Docker/"$AUTHOR"/ Hello_docker.html > index.html ; nginx -g 'daemon off;'
FROM nginx
ENV AUTHOR=Docker
RUN cd /usr/../share/nginx/html
COPY Hello_docker.html /usr/share/nginx/html
CMD cd /usr/share/nginx/html && sed -e s/Docker/"$AUTHOR"/ Hello_docker.html > index.html ; nginx -g 'daemon off;'
Code samples without security vulnerabilities¶
Negative test num. 1 - dockerfile fileFROM nginx
ENV AUTHOR=Docker
WORKDIR /usr/share/nginx/html
COPY Hello_docker.html /usr/share/nginx/html
CMD cd /usr/share/nginx/html && sed -e s/Docker/"$AUTHOR"/ Hello_docker.html > index.html ; nginx -g 'daemon off;'
Negative test num. 2 - dockerfile fileFROM nginx
ENV AUTHOR=Docker
RUN cd /usr/share/nginx/html
COPY Hello_docker.html /usr/share/nginx/html
CMD cd /usr/share/nginx/html && sed -e s/Docker/"$AUTHOR"/ Hello_docker.html > index.html ; nginx -g 'daemon off;'



        

        

    
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