Reduce size of git clone and use all cores in make

Containerfile

@@ -32,9 +32,9 @@ RUN apk add yosys
 WORKDIR /home/root/aur-install
 
 # Install prjxray librairies
-RUN git clone https://github.com/supersurviveur/prjxray.git && \
+RUN git clone https://github.com/supersurviveur/prjxray.git --depth 1 && \
     cd prjxray && \
-    git submodule update --init && \
+    git submodule update --init --depth 1 && \
     # include fasm2frames in python package
     mv utils/fasm2frames.py prjxray/ && \
     sed -E 's/(fasm2frames=)utils/\1prjxray/' -i setup.py && \
@@ -44,7 +44,7 @@ RUN git clone https://github.com/supersurviveur/prjxray.git && \
         -DCMAKE_INSTALL_PREFIX='/usr' \
         -DCMAKE_POLICY_VERSION_MINIMUM=3.5 \
         -Wno-dev && \
-    cmake --build build && \
+    cmake --build build -j$(nproc) && \
     python -m build --wheel --no-isolation --skip-dependency-check && \
     python -m installer dist/*.whl && \
     python -m build third_party/fasm --wheel --no-isolation --skip-dependency-check && \
@@ -54,7 +54,7 @@ RUN git clone https://github.com/supersurviveur/prjxray.git && \
 RUN pip install textx --break-system-packages
 
 # Install the zynq7 prjxray database
-RUN git clone https://github.com/f4pga/prjxray-db.git && \
+RUN git clone https://github.com/f4pga/prjxray-db.git --depth 1 && \
     cd prjxray-db && \
     install -dm 755 /usr/share/xray/database && \
     cp -r zynq7 /usr/share/xray/database/ && \
@@ -62,9 +62,9 @@ RUN git clone https://github.com/f4pga/prjxray-db.git && \
     rm /usr/share/xray/database/zynq7/xc7z020 -rf
 
 # Install nextpnr-himbaechel
-RUN git clone https://github.com/YosysHQ/nextpnr && \
+RUN git clone https://github.com/YosysHQ/nextpnr --depth 1 && \
     cd nextpnr && \
-    git submodule update --remote --init himbaechel/uarch/xilinx/meta && \
+    git submodule update --remote --init --depth 1 himbaechel/uarch/xilinx/meta && \
     cmake -S "." -B build \
         -DARCH=himbaechel \
         -DHIMBAECHEL_UARCH=xilinx \
@@ -75,12 +75,12 @@ RUN git clone https://github.com/YosysHQ/nextpnr && \
         -DCMAKE_BUILD_TYPE=None \
         -DCMAKE_INSTALL_PREFIX=/usr \
         -DUSE_OPENMP=ON && \
-    make -C build
+    make -C build -j$(nproc)
 
 # Install sv2v
-RUN git clone https://github.com/zachjs/sv2v && \
+RUN git clone https://github.com/zachjs/sv2v --depth 1 && \
     cd sv2v && \
-    make
+    make -j$(nproc)
 
 COPY copy_bin_deps.sh /usr/bin/
 RUN chmod +x /usr/bin/copy_bin_deps.sh