fix: lint dockerfiles

* using hadolint

README.md

@@ -162,9 +162,8 @@ Here is an example for using setup-cpp to make a builder image that has the Cpp
 FROM ubuntu:22.04 AS base
 
 # add setup-cpp
-RUN apt-get update && apt-get install -y \
-  npm \
-  && rm -rf /var/lib/apt/lists/*
+RUN apt-get update -qq
+RUN apt-get install -y --no-install-recommends npm
 RUN npm install -g setup-cpp
 
 # install llvm, cmake, ninja, and ccache

dev/docker/arch_node.dockerfile

@@ -17,23 +17,21 @@ WORKDIR "/"
 # run installation
 RUN node ./setup-cpp.js --compiler llvm --cmake true --ninja true --cppcheck true --ccache true --vcpkg true --doxygen true --gcovr true --task true
 
-# clean up
-RUN pacman -Scc --noconfirm
-RUN rm -rf /tmp/*
+CMD ["source", "~/.cpprc"]
+ENTRYPOINT ["/bin/bash"]
 
-CMD source ~/.cpprc
-ENTRYPOINT [ "/bin/bash" ]
 
 #### Building
-FROM base AS builder
+FROM base as builder
 COPY ./dev/cpp_vcpkg_project /home/app
 WORKDIR /home/app
 RUN bash -c 'source ~/.cpprc \
     && task build'
 
+
 ### Running environment
 # use a distroless image or ubuntu:22.04 if you wish
-FROM gcr.io/distroless/cc
+FROM gcr.io/distroless/cc as runner
 # copy the built binaries and their runtime dependencies
 COPY --from=builder /home/app/build/my_exe/Release/ /home/app/
 WORKDIR /home/app/

dev/docker/fedora_node.dockerfile

@@ -1,11 +1,8 @@
 ## base image
 FROM fedora as base
 
-# nodejs
-RUN dnf -y install nodejs
-
-# curl for downloading setup-cpp
-RUN dnf -y install curl
+# nodejs and curl for downloading setup-cpp
+RUN dnf -y install nodejs curl
 
 # add setup-cpp.js
 COPY "./dist/node12" "/"
@@ -14,22 +11,21 @@ WORKDIR "/"
 # run installation
 RUN node ./setup-cpp.js --compiler llvm --cmake true --ninja true --cppcheck true --ccache true --vcpkg true --doxygen true --gcovr true --task true --powershell true
 
-# clean up
-RUN rm -rf /tmp/*
-
-CMD source ~/.cpprc
+CMD ["source", "~/.cpprc"]
 ENTRYPOINT [ "/bin/bash" ]
 
+
 #### Building
-FROM base AS builder
+FROM base as builder
 COPY ./dev/cpp_vcpkg_project /home/app
 WORKDIR /home/app
 RUN bash -c 'source ~/.cpprc \
     && task build'
 
+
 ### Running environment
 # use a distroless image or ubuntu:22.04 if you wish
-FROM gcr.io/distroless/cc
+FROM gcr.io/distroless/cc as runner
 # copy the built binaries and their runtime dependencies
 COPY --from=builder /home/app/build/my_exe/Release/ /home/app/
 WORKDIR /home/app/

dev/docker/ubuntu.dockerfile

@@ -1,28 +1,29 @@
 #### Base Image
-FROM ubuntu:22.04 AS base
+FROM ubuntu:22.04 as base
 
 # install setup-cpp
-RUN apt-get update && apt-get install -y \
-  npm \
-  && rm -rf /var/lib/apt/lists/*
+RUN apt-get update -qq
+RUN apt-get install -y --no-install-recommends npm
 RUN npm install -g setup-cpp
 
 # install llvm, cmake, ninja, and ccache
 RUN setup-cpp --compiler llvm --cmake true --ninja true --ccache true --vcpkg true --task true
 
-CMD source ~/.cpprc
-ENTRYPOINT [ "/bin/bash" ]
+CMD ["source", "~/.cpprc"]
+ENTRYPOINT ["/bin/bash"]
+
 
 #### Building
-FROM base AS builder
-ADD ./dev/cpp_vcpkg_project /home/app
+FROM base as builder
+COPY ./dev/cpp_vcpkg_project /home/app
 WORKDIR /home/app
 RUN bash -c 'source ~/.cpprc \
     && task build'
 
+
 ### Running environment
 # use a distroless image or ubuntu:22.04 if you wish
-FROM gcr.io/distroless/cc
+FROM gcr.io/distroless/cc as runner
 # copy the built binaries and their runtime dependencies
 COPY --from=builder /home/app/build/my_exe/Release/ /home/app/
 WORKDIR /home/app/

dev/docker/ubuntu_20.04_node.dockerfile

@@ -1,4 +1,4 @@
-FROM ubuntu:20.04 AS base
+FROM ubuntu:20.04 as base
 
 # set time-zone
 ENV TZ=Canada/Pacific
@@ -8,7 +8,7 @@ RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
 ENV DEBIAN_FRONTEND=noninteractive
 RUN apt-get update -qq
 RUN apt-get install -y --no-install-recommends curl gnupg ca-certificates
-RUN curl -fsSL https://deb.nodesource.com/setup_lts.x | bash -
+RUN ["/bin/bash", "-c", "set -o pipefail && curl -fsSL https://deb.nodesource.com/setup_lts.x | bash -"]
 RUN apt-get install -y --no-install-recommends nodejs
 
 # add setup-cpp.js
@@ -18,19 +18,21 @@ WORKDIR "/"
 # run installation
 RUN node ./setup-cpp.js --compiler llvm --cmake true --ninja true --cppcheck true --ccache true --vcpkg true --doxygen true --gcovr true --task true
 
-CMD source ~/.cpprc
-ENTRYPOINT [ "/bin/bash" ]
+CMD ["source", "~/.cpprc"]
+ENTRYPOINT ["/bin/bash"]
+
 
 #### Building
-FROM base AS builder
-ADD ./dev/cpp_vcpkg_project /home/app
+FROM base as builder
+COPY ./dev/cpp_vcpkg_project /home/app
 WORKDIR /home/app
 RUN bash -c 'source ~/.cpprc \
     && task build'
 
+
 ### Running environment
 # use a distroless image or ubuntu:20.04 if you wish
-FROM gcr.io/distroless/cc
+FROM gcr.io/distroless/cc as runner
 # copy the built binaries and their runtime dependencies
 COPY --from=builder /home/app/build/my_exe/Release/ /home/app/
 WORKDIR /home/app/

dev/docker/ubuntu_node.dockerfile

@@ -1,8 +1,7 @@
 FROM ubuntu:22.04 AS base
 
-RUN apt-get update && apt-get install -y \
-  nodejs \
-  && rm -rf /var/lib/apt/lists/*
+RUN apt-get update -qq 
+RUN apt-get install -y --no-install-recommends nodejs
 
 # add setup-cpp.js
 COPY "./dist/node12" "/"
@@ -11,13 +10,10 @@ WORKDIR "/"
 # run installation
 RUN node ./setup-cpp.js --compiler llvm --cmake true --ninja true --cppcheck true --ccache true --vcpkg true --doxygen true --gcovr true --task true --powershell true
 
-# clean up
-RUN apt-get clean && rm -rf /var/lib/apt/lists/*
-RUN rm -rf /tmp/*
-
-CMD source ~/.cpprc
+CMD ["source", "~/.cpprc"]
 ENTRYPOINT [ "/bin/bash" ]
 
+
 #### Building
 FROM base AS builder
 COPY ./dev/cpp_vcpkg_project /home/app
@@ -25,10 +21,11 @@ WORKDIR /home/app
 RUN bash -c 'source ~/.cpprc \
     && task build'
 
+
 ### Running environment
 # use a distroless image or ubuntu:22.04 if you wish
-FROM gcr.io/distroless/cc
+FROM gcr.io/distroless/cc as runner
 # copy the built binaries and their runtime dependencies
 COPY --from=builder /home/app/build/my_exe/Release/ /home/app/
 WORKDIR /home/app/
-ENTRYPOINT ["./my_exe"]
+ENTRYPOINT ["./my_exe"]s