Capitalize AS in Dockerfile

Author: jwokaty

Dockerfile

@@ -1,12 +1,12 @@
-FROM ubuntu:jammy as build
+FROM ubuntu:jammy AS build
 ARG CYCLE=release
 RUN useradd -ms /bin/bash biocbuild && apt update -qq && apt install sudo systemd -y && usermod -aG sudo biocbuild && echo "biocbuild ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers
 USER biocbuild
 COPY . /home/biocbuild/bioconductor_salt
 WORKDIR /home/biocbuild
 RUN DEBIAN_FRONTEND="noninteractive" bash bioconductor_salt/startup_bbs_standalone_${CYCLE}.sh
 
-FROM ubuntu:jammy as final
+FROM ubuntu:jammy AS final
 COPY --from=build / /
 ENTRYPOINT ["/bin/bash", "-c"]
 CMD ["/bbs_r_start"]