docker: source ~/.cpprc in the builder step [skip test]

Author: aminya

README.md

@@ -194,7 +194,7 @@ RUN ./setup_cpp_linux --compiler llvm --cmake true --ninja true --ccache true
 # activate cpp environment variables
 RUN source ~/.cpprc
 
-ENTRYPOINT [ "/bin/sh" ]
+ENTRYPOINT [ "/bin/bash" ]
 ```
 
 See [this folder](https://github.com/aminya/setup-cpp/tree/master/dev/docker), for some dockerfile examples.

dev/docker/ubuntu.dockerfile

@@ -12,13 +12,14 @@ RUN chmod +x ./setup_cpp_linux
 RUN ./setup_cpp_linux --compiler llvm --cmake true --ninja true --ccache true --vcpkg true --make true
 
 CMD source ~/.cpprc
-ENTRYPOINT [ "/bin/sh" ]
+ENTRYPOINT [ "/bin/bash" ]
 
 #### Building
 FROM base AS builder
 ADD ./dev/cpp_vcpkg_project /home/app
 WORKDIR /home/app
-RUN make build
+RUN bash -c 'source ~/.cpprc \ 
+    && make build'
 
 ### Running environment
 FROM gcr.io/distroless/cc

dev/docker/ubuntu_node.dockerfile

@@ -11,13 +11,14 @@ WORKDIR "/"
 RUN node ./setup_cpp.js --compiler llvm --cmake true --ninja true --cppcheck true --ccache true --vcpkg true --doxygen true --gcovr true --make true
 
 CMD source ~/.cpprc
-ENTRYPOINT [ "/bin/sh" ]
+ENTRYPOINT [ "/bin/bash" ]
 
 #### Building
 FROM base AS builder
 ADD ./dev/cpp_vcpkg_project /home/app
 WORKDIR /home/app
-RUN make build
+RUN bash -c 'source ~/.cpprc \ 
+    && make build'
 
 ### Running environment
 FROM gcr.io/distroless/cc

dev/docker/ubuntu_stable_node.dockerfile

@@ -19,13 +19,14 @@ WORKDIR "/"
 RUN node ./setup_cpp.js --compiler llvm --cmake true --ninja true --cppcheck true --ccache true --vcpkg true --doxygen true --gcovr true --make true
 
 CMD source ~/.cpprc
-ENTRYPOINT [ "/bin/sh" ]
+ENTRYPOINT [ "/bin/bash" ]
 
 #### Building
 FROM base AS builder
 ADD ./dev/cpp_vcpkg_project /home/app
 WORKDIR /home/app
-RUN make build
+RUN bash -c 'source ~/.cpprc \ 
+    && make build'
 
 ### Running environment
 FROM gcr.io/distroless/cc