Update Dockefile to reduce build time

live_exam_os/Dockerfile

@@ -4,7 +4,7 @@ FROM ubuntu:22.04
 ENV archive=go1.22.6.linux-amd64.tar.gz
 ENV PATH=$PATH:/usr/local/go/bin
 
-RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y gcc pkg-config git wget make ca-certificates libglfw3-dev libxcursor-dev libxinerama-dev libxi-dev libxxf86vm-dev upx-ucl curl cryptsetup squashfs-tools fakechroot debootstrap xorriso mtools dosfstools
+RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y gcc pkg-config git wget make ca-certificates libglfw3-dev libxcursor-dev libxinerama-dev libxi-dev libxxf86vm-dev upx-ucl curl cryptsetup squashfs-tools fakechroot debootstrap xorriso mtools dosfstools gnutls-bin
 
 RUN git clone https://github.com/limine-bootloader/limine.git --branch=v8.x-binary --depth=1 /opt/limine && \
     cd /opt/limine && \
@@ -15,8 +15,12 @@ RUN git config --global --add safe.directory /data
 
 RUN wget https://go.dev/dl/$archive && tar -C /usr/local -xzf $archive
 
+# This part is used to compile the dependencies so that you don't have to do it every time you run the build.sh script (it saves around 2.5 minutes).
 WORKDIR /nexus
 
 COPY src src
+COPY Makefile .
+COPY config config
 
-RUN cd src/client && go mod download
+RUN cd config/certs && ./gen-cert.sh ca.info nexus-server.info /nexus/certs
+RUN make build_nexus-exam SERVER='127.0.0.1:1077' CERT='certs/ca-cert.pem' EXAM_USER='user' EXAM_PWD='pwd'