feat(tf2-tftrue): build TFTrue in a Docker stage (#28)

packages/tf2-tftrue/Dockerfile

@@ -1,14 +1,26 @@
+FROM debian:latest AS tftrue-build
+WORKDIR /build
+
+ARG TFTRUE_REPOSITORY_URL=https://github.com/AnAkkk/TFTrue.git
+ARG TFTRUE_COMMIT=f5d866fcd5e6d27992b888919484a7b1a3f24454
+
+RUN apt-get -y update \
+  && apt-get install -y build-essential git cmake gcc-multilib g++-multilib \
+  && rm -rf /var/lib/apt/lists/* \
+  && git clone --recurse-submodules ${TFTRUE_REPOSITORY_URL} tftrue \
+  && cd tftrue \
+  && git checkout ${TFTRUE_COMMIT} \
+  && mkdir build \
+  && cd build \
+  && env CXXFLAGS="-DNO_AUTOUPDATE" cmake .. -DCMAKE_BUILD_TYPE=Release \
+  && make
+
+
 FROM melkortf/tf2-sourcemod:latest
 LABEL maintainer="[email protected]"
 
-ARG TFTRUE_URL=https://github.com/AnAkkk/TFTrue/raw/1867de3cf3dd77afdef6ee4c3929f6e94772cb35/release/TFTrue.so
-
 COPY TFTrue.vdf "${SERVER_DIR}/tf/addons/TFTrue.vdf"
-COPY checksum.md5 .
-RUN wget -nv "${TFTRUE_URL}" -O TFTrue.so \
-  && md5sum -c checksum.md5 \
-  && mv TFTrue.so "${SERVER_DIR}/tf/addons/TFTrue.so" \
-  && rm checksum.md5
+COPY --from=tftrue-build /build/tftrue/build/TFTrue.so ${SERVER_DIR}/tf/addons/TFTrue.so
 
 CMD ["+sv_pure", "2", "+map", "cp_badlands", "+maxplayers", "24"]