Update Dockerfile

Dockerfile

 FROM rust:slim
 MAINTAINER elois <elois@duniter.org>
-LABEL version="0.1.2"
+LABEL version="0.1.3"
 LABEL description="Minimal environment for a Dunitrust developer"
 
-
-# Install fmt and clippy
-RUN rustup component add rustfmt
-RUN rustup component add clippy
+# Avoid warnings by switching to noninteractive
+ENV DEBIAN_FRONTEND=noninteractive
 
 # Add libraries needed to compile dunitrust
-RUN apt-get update && \
-   apt-get install -y --no-install-recommends cmake git nano pkg-config libssl-dev zlib1g-dev && \
-   apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+RUN apt-get update \
+   && apt-get install -y --no-install-recommends apt-utils 2>&1 \
+   # instakk needed packages
+   && apt-get install -y --no-install-recommends cmake git nano pkg-config procps libssl-dev lldb-3.9 lsb-release zlib1g-dev \
+   # Install Rust components
+   && rustup update \
+   && rustup component add clippy rust-analysis rust-src rustfmt rls \
+   #
+   # Clean up
+   && apt-get autoremove -y \
+   && apt-get clean -y \
+   && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
 # Create a user
 RUN useradd -ms /bin/bash user
@@ -19,11 +26,13 @@ WORKDIR /home/user
 ENV HOME /home/user
 ENV USER user
 
-
 # Add external scripts
 ADD . /home/user
 RUN chmod +x add_useful_aliases.sh
 
+# Switch back to dialog for any ad-hoc use of apt-get
+ENV DEBIAN_FRONTEND=dialog
+
 # Now act as `user`
 USER user
 
@@ -33,5 +42,5 @@ RUN ./add_useful_aliases.sh
 # Install coverage tool
 RUN cargo install cargo-tarpaulin
 
-# Clone Dunitrust repository
-RUN git clone --depth 50 -- https://git.duniter.org/nodes/rust/duniter-rs.git dunitrust
+# Install http server
+cargo install https