Update Dockerfile

Dockerfile

@@ -3,13 +3,11 @@ MAINTAINER elois <elois@ifee.fr>
 LABEL version="1.37"
 LABEL description="To compile and package rust program for arch linux on x64 architecture"
 
-# TODO install needed dependencies
-
 # update & upgrade
 RUN pacman -Syu --noconfirm
 
 # install gcc
-RUN pacman -S --noconfirm gcc
+RUN pacman -S --noconfirm gcc grep sudo
    
 # install rustup
 RUN curl https://sh.rustup.rs -sSf | sh -s -- -y
@@ -19,3 +17,9 @@ ENV PATH /root/.cargo/bin:$PATH
 
 # install cargo arch
 RUN cargo install --git https://github.com/ZettaScript/cargo-arch
+
+# create sudoer user (makepkg refuses to be run by root)
+RUN useradd --no-create-home --shell=/bin/false user && usermod -L user
+RUN echo "user ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers
+RUN echo "root ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers
+ENV USER user
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