Use multi-stage to save space on tester docker

docker-scripts/build-dockers/Dockerfile

@@ -12,6 +12,8 @@ RUN ./dotnet-install.sh -c 2.1
 RUN echo "-------------------Installing armips------------------"
 RUN git clone --recursive https://github.com/Kingcom/armips.git
 WORKDIR /opt/dep/armips
+# Need a buildable commit...
+RUN git checkout d481fe7a48b3ef02ce5358291a240819ff5742f1
 RUN mkdir -p bld
 WORKDIR /opt/dep/armips/bld
 RUN cmake ../
@@ -28,19 +30,30 @@ WORKDIR /opt/src
 USER m2gba
 CMD /home/m2gba/src/docker-scripts/docker-build-rom-script
 
-#------------------- Building the Tester ---------------------
-FROM builder AS tester
+#---------------------- Building mgba ------------------------
+FROM builder AS mgba_builder
 USER root
 RUN apt-get update && \
     apt-get install -y --no-install-recommends build-essential ccache cmake \
         git libavcodec-dev libavfilter-dev libavformat-dev libavresample-dev \
         libavutil-dev libcmocka-dev libedit-dev libelf-dev libpng-dev \
         libqt5opengl5-dev libsdl2-dev libsqlite3-dev libswscale-dev \
-        libzip-dev qtmultimedia5-dev qttools5-dev qttools5-dev-tools xvfb pulseaudio alsa-utils && \
+        libzip-dev qtmultimedia5-dev qttools5-dev qttools5-dev-tools && \
     apt-get autoremove -y && apt-get clean
 WORKDIR /home/m2gba
 USER m2gba
 RUN git clone https://github.com/mgba-emu/mgba.git
-RUN cd mgba && mkdir build && cd build && cmake -DCMAKE_INSTALL_PREFIX:PATH=/usr .. && make && cp sdl/mgba /opt/src/bin/mgba-sdl
+RUN cd mgba && mkdir build && cd build && cmake -DCMAKE_INSTALL_PREFIX:PATH=/usr .. && make
+
+#------------------- Building the Tester ---------------------
+FROM builder AS tester
+USER root
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends xvfb pulseaudio alsa-utils libsdl2-dev \
+    libzip-dev libavcodec-dev libavfilter-dev && \
+    apt-get autoremove -y && apt-get clean
 WORKDIR /opt/src
+USER m2gba
+COPY --from=mgba_builder /home/m2gba/mgba/build/sdl/mgba ./bin/mgba-sdl
+COPY --from=mgba_builder /home/m2gba/mgba/build/libmgba* ./
 CMD /home/m2gba/src/docker-scripts/docker-test-rom-script

docker-scripts/build-dockers/build-builder.sh

@@ -1,3 +1,3 @@
 #!/bin/bash
-docker rm image lorenzooone/m2gba_translation:builder
+docker image rm lorenzooone/m2gba_translation:builder
 docker build --target builder . -t lorenzooone/m2gba_translation:builder

docker-scripts/build-dockers/build-tester.sh

@@ -1,3 +1,3 @@
 #!/bin/bash
-docker rm image lorenzooone/m2gba_translation:tester
+docker image rm lorenzooone/m2gba_translation:tester
 docker build --target tester . -t lorenzooone/m2gba_translation:tester