chore: Speed up docker builds a bit by reducing layer count.

This is especially noticeable on local builds (less so on the github
workers).

.github/workflows/ci.yml

@@ -21,10 +21,17 @@ jobs:
     steps:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
+        with:
+          driver: docker
+      - name: Build toxchat/c-toxcore:sources
+        uses: docker/build-push-action@v4
+        with:
+          file: other/docker/sources/sources.Dockerfile
+          tags: toxchat/c-toxcore:sources
       - name: Docker Build
         uses: docker/build-push-action@v4
         with:
-          file: other/docker/${{ matrix.tool }}/Dockerfile
+          file: other/docker/${{ matrix.tool }}/${{ matrix.tool }}.Dockerfile
 
   coverage-linux:
     runs-on: ubuntu-latest

.github/workflows/docker.yml

@@ -121,19 +121,12 @@ jobs:
     steps:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
-        with:
-          driver: docker
       - name: Login to DockerHub
         if: ${{ github.event_name == 'push' }}
         uses: docker/login-action@v3
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
-      - name: Build toxchat/c-toxcore:sources
-        uses: docker/build-push-action@v4
-        with:
-          file: other/docker/sources/Dockerfile
-          tags: toxchat/c-toxcore:sources
       - name: Build and push
         uses: docker/build-push-action@v4
         with:

auto_tests/save_compatibility_test.c

@@ -135,6 +135,7 @@ static void test_save_compatibility(const char *save_path)
     tox_kill(tox);
 }
 
+// cppcheck-suppress constParameter
 int main(int argc, char *argv[])
 {
     char base_path[4096] = {0};

other/DHT_bootstrap.c

@@ -170,6 +170,7 @@ int main(int argc, char *argv[])
 
     if (!(onion && forwarding && onion_a)) {
         printf("Something failed to initialize.\n");
+        // cppcheck-suppress resourceLeak
         return 1;
     }
 
@@ -178,6 +179,7 @@ int main(int argc, char *argv[])
     perror("Initialization");
 
     if (!manage_keys(dht)) {
+        // cppcheck-suppress resourceLeak
         return 1;
     }
     printf("Public key: ");
@@ -189,6 +191,7 @@ int main(int argc, char *argv[])
 
     if (tcp_s == nullptr) {
         printf("TCP server failed to initialize.\n");
+        // cppcheck-suppress resourceLeak
         return 1;
     }
 
@@ -199,6 +202,7 @@ int main(int argc, char *argv[])
 
     if (file == nullptr) {
         printf("Could not open file \"%s\" for writing. Exiting...\n", public_id_filename);
+        // cppcheck-suppress resourceLeak
         return 1;
     }
 

other/docker/autotools/autotools.Dockerfile

@@ -1,5 +1,6 @@
 ################################################
 # autotools-linux
+FROM toxchat/c-toxcore:sources AS sources
 FROM ubuntu:22.04
 
 RUN apt-get update && \
@@ -24,7 +25,12 @@ USER builder
 
 WORKDIR /home/builder
 
-# Copy the sources and run the build.
+# Copy autotools-specific build scripts not present in the sources image.
+# These change less frequently than the sources, thus are copied first.
 COPY --chown=builder:builder . /home/builder/c-toxcore/
+
+# Copy the sources and run the build.
+COPY --chown=builder:builder --from=sources /src/ /home/builder/c-toxcore/
+
 WORKDIR /home/builder/c-toxcore
 RUN CC=gcc .github/scripts/autotools-linux

other/docker/autotools/autotools.Dockerfile.dockerignore

@@ -0,0 +1,12 @@
+**/*
+!.github/scripts/autotools-linux
+!m4/*
+!configure.ac
+!*.pc.in
+!*.spec.in
+!**/Makefile.am
+!**/Makefile.inc
+!docs/updates/*
+!other/DHTnodes
+!other/astyle/*
+!other/tox.png

other/docker/autotools/run

@@ -2,4 +2,5 @@
 
 set -eux
 BUILD=autotools
-docker build -t "toxchat/c-toxcore:$BUILD" -f "other/docker/$BUILD/Dockerfile" .
+other/docker/sources/build
+docker build -t "toxchat/c-toxcore:$BUILD" -f "other/docker/$BUILD/$BUILD.Dockerfile" .

other/docker/clang-tidy/clang-tidy.Dockerfile

@@ -1,3 +1,4 @@
+FROM toxchat/c-toxcore:sources AS sources
 FROM alpine:3.19.0
 
 RUN ["apk", "add", "--no-cache", \
@@ -16,6 +17,8 @@ RUN ["apk", "add", "--no-cache", \
 
 ENV CC=clang CXX=clang++
 
-COPY . /c-toxcore/
+COPY --from=sources /src/ /c-toxcore/
+COPY other/analysis/run-clang-tidy other/analysis/variants.sh /c-toxcore/other/analysis/
+COPY .clang-tidy /c-toxcore/
 WORKDIR /c-toxcore
 RUN other/analysis/run-clang-tidy

other/docker/clang-tidy/run

@@ -2,4 +2,5 @@
 
 set -eux
 BUILD=clang-tidy
-docker build -t "toxchat/c-toxcore:$BUILD" -f "other/docker/$BUILD/Dockerfile" .
+other/docker/sources/build
+docker build -t "toxchat/c-toxcore:$BUILD" -f "other/docker/$BUILD/$BUILD.Dockerfile" .

other/docker/compcert/compcert.Dockerfile

@@ -1,3 +1,4 @@
+FROM toxchat/c-toxcore:sources AS sources
 FROM toxchat/compcert:latest
 
 RUN apt-get update && \
@@ -8,15 +9,10 @@ RUN apt-get update && \
  && rm -rf /var/lib/apt/lists/*
 
 WORKDIR /work
-COPY auto_tests/ /work/auto_tests/
-COPY testing/ /work/testing/
-COPY toxav/ /work/toxav/
-COPY toxcore/ /work/toxcore/
-COPY toxencryptsave/ /work/toxencryptsave/
-COPY third_party/ /work/third_party/
+COPY --from=sources /src/ /work/
 
 SHELL ["/bin/bash", "-o", "pipefail", "-c"]
 
 COPY other/docker/compcert/Makefile /work/
 RUN make "-j$(nproc)"
-RUN ./send_message_test #| grep 'tox clients connected'
+RUN ./send_message_test | grep 'tox clients connected'

other/docker/compcert/run

@@ -2,4 +2,5 @@
 
 set -eux
 BUILD=compcert
-docker build -t "toxchat/c-toxcore:$BUILD" -f "other/docker/$BUILD/Dockerfile" .
+other/docker/sources/build
+docker build -t "toxchat/c-toxcore:$BUILD" -f "other/docker/$BUILD/$BUILD.Dockerfile" .

other/docker/coverage/coverage.Dockerfile

@@ -1,4 +1,4 @@
-FROM toxchat/c-toxcore:sources AS src
+FROM toxchat/c-toxcore:sources AS sources
 FROM ubuntu:20.04 AS build
 
 SHELL ["/bin/bash", "-o", "pipefail", "-c"]
@@ -41,7 +41,7 @@ ENV CC=clang-17 \
     PYTHONUNBUFFERED=1 \
     PATH=$PATH:/usr/lib/go-1.18/bin
 
-COPY --from=src /src/ /work/
+COPY --from=sources /src/ /work/
 
 WORKDIR /work
 RUN git clone --depth=1 https://github.com/TokTok/toktok-fuzzer /work/testing/fuzzing/toktok-fuzzer

other/docker/coverage/run

@@ -4,6 +4,8 @@ set -eux
 
 read -a ci_env <<<"$(bash <(curl -s https://codecov.io/env))"
 
-docker build -t toxchat/c-toxcore:sources -f other/docker/sources/Dockerfile .
-docker build -t toxchat/c-toxcore:coverage -f other/docker/coverage/Dockerfile .
+BUILD=coverage
+other/docker/sources/build
+docker build -t "toxchat/c-toxcore:$BUILD" -f "other/docker/$BUILD/$BUILD.Dockerfile" .
+
 docker run "${ci_env[@]}" -e CI=true --name toxcore-coverage --rm -t toxchat/c-toxcore:coverage /usr/local/bin/codecov

other/docker/coverage/serve

@@ -2,7 +2,9 @@
 
 set -eux
 
-docker build -t toxchat/c-toxcore:sources -f other/docker/sources/Dockerfile .
-docker build -t toxchat/c-toxcore:coverage -f other/docker/coverage/Dockerfile .
-docker build -t toxchat/c-toxcore:coverage-nginx -f other/docker/coverage/Dockerfile.nginx other/docker/coverage
+BUILD=coverage
+other/docker/sources/build
+docker build -t "toxchat/c-toxcore:$BUILD" -f "other/docker/$BUILD/$BUILD.Dockerfile" .
+
+docker build -t toxchat/c-toxcore:coverage-nginx -f other/docker/coverage/nginx.Dockerfile other/docker/coverage
 docker run --name toxcore-coverage --rm -it -p "28192:80" toxchat/c-toxcore:coverage-nginx

other/docker/cppcheck/Dockerfile

@@ -1,30 +0,0 @@
-FROM alpine:3.19.0
-
-RUN ["apk", "add", "--no-cache", \
- "bash", \
- "cppcheck", \
- "findutils", \
- "libconfig-dev", \
- "libsodium-dev", \
- "libvpx-dev", \
- "linux-headers", \
- "make", \
- "opus-dev"]
-
-COPY other/bootstrap_daemon/ /src/workspace/c-toxcore/other/bootstrap_daemon/
-COPY other/bootstrap_node_packets.* /src/workspace/c-toxcore/other/
-COPY other/fun/ /src/workspace/c-toxcore/other/fun/
-COPY auto_tests/check_compat.h /src/workspace/c-toxcore/auto_tests/
-COPY testing/ /src/workspace/c-toxcore/testing/
-COPY toxav/ /src/workspace/c-toxcore/toxav/
-COPY toxcore/ /src/workspace/c-toxcore/toxcore/
-COPY toxencryptsave/ /src/workspace/c-toxcore/toxencryptsave/
-COPY third_party/cmp/cmp.h /src/workspace/c-toxcore/third_party/cmp/
-COPY other/analysis/run-cppcheck \
-     other/analysis/gen-file.sh \
-     other/analysis/variants.sh \
-     /src/workspace/c-toxcore/other/analysis/
-COPY other/docker/cppcheck/toxcore.cfg \
-     /src/workspace/c-toxcore/other/docker/cppcheck/
-WORKDIR /src/workspace/c-toxcore
-RUN ["other/analysis/run-cppcheck"]

other/docker/cppcheck/cppcheck.Dockerfile

@@ -0,0 +1,23 @@
+FROM toxchat/c-toxcore:sources AS sources
+FROM alpine:3.19.0
+
+RUN ["apk", "add", "--no-cache", \
+ "bash", \
+ "cppcheck", \
+ "findutils", \
+ "libconfig-dev", \
+ "libsodium-dev", \
+ "libvpx-dev", \
+ "linux-headers", \
+ "make", \
+ "opus-dev"]
+
+COPY --from=sources /src/ /src/workspace/c-toxcore/
+COPY other/analysis/run-cppcheck \
+     other/analysis/gen-file.sh \
+     other/analysis/variants.sh \
+     /src/workspace/c-toxcore/other/analysis/
+COPY other/docker/cppcheck/toxcore.cfg \
+     /src/workspace/c-toxcore/other/docker/cppcheck/
+WORKDIR /src/workspace/c-toxcore
+RUN ["other/analysis/run-cppcheck"]

other/docker/cppcheck/run

@@ -2,4 +2,5 @@
 
 set -eux
 BUILD=cppcheck
-docker build -t "toxchat/c-toxcore:$BUILD" -f "other/docker/$BUILD/Dockerfile" .
+other/docker/sources/build
+docker build -t "toxchat/c-toxcore:$BUILD" -f "other/docker/$BUILD/$BUILD.Dockerfile" .

other/docker/doxygen/doxygen.Dockerfile

@@ -1,4 +1,5 @@
-FROM alpine:latest AS build
+FROM toxchat/c-toxcore:sources AS sources
+FROM alpine:3.19.0 AS build
 
 ENV LANG=en_US.UTF-8 \
     LANGUAGE=en_US.UTF-8 \
@@ -8,9 +9,9 @@ ENV LANG=en_US.UTF-8 \
 RUN apk add --no-cache doxygen git graphviz texlive \
  && git clone --depth=1 https://github.com/jothepro/doxygen-awesome-css.git /work/doxygen-awesome-css
 WORKDIR /work
-COPY . /work/
-RUN cat docs/Doxyfile > Doxyfile \
- && echo "WARN_AS_ERROR = YES" >> Doxyfile \
+COPY --from=sources /src/ /work/
+COPY docs/Doxyfile /work/Doxyfile
+RUN echo "WARN_AS_ERROR = YES" >> Doxyfile \
  && sed -i -e 's/^non_null([^)]*) *//;s/^nullable([^)]*) *//' $(find . -name "*.[ch]") \
  && doxygen Doxyfile
 

other/docker/doxygen/run

@@ -1,6 +1,8 @@
 #!/bin/sh
 
 set -eux
+BUILD=doxygen
+other/docker/sources/build
+docker build -t "toxchat/c-toxcore:$BUILD" -f "other/docker/$BUILD/$BUILD.Dockerfile" .
 
-docker build -t toxchat/c-toxcore:docs -f other/docker/doxygen/Dockerfile .
-docker run --name toxcore-docs --rm -it -p "28192:80" toxchat/c-toxcore:docs
+docker run --name toxcore-doxygen --rm -it -p "28192:80" "toxchat/c-toxcore:$BUILD"

other/docker/goblint/goblint.Dockerfile

@@ -1,3 +1,4 @@
+FROM toxchat/c-toxcore:sources AS sources
 FROM ghcr.io/goblint/analyzer:latest
 
 RUN apt-get update && \
@@ -8,15 +9,9 @@ RUN apt-get update && \
  && rm -rf /var/lib/apt/lists/*
 
 WORKDIR /work
-COPY auto_tests/ /work/auto_tests/
-COPY testing/ /work/testing/
-COPY toxav/ /work/toxav/
-COPY toxcore/ /work/toxcore/
-COPY toxencryptsave/ /work/toxencryptsave/
-COPY third_party/ /work/third_party/
+COPY --from=sources /src/ /work/
 
 COPY other/make_single_file /work/other/
-COPY other/docker/goblint/sodium.c /work/other/docker/goblint/
 
 RUN other/make_single_file -core auto_tests/tox_new_test.c other/docker/goblint/sodium.c > analysis.c
 # Try compiling+linking just to make sure we have all the fake functions.

other/docker/goblint/run

@@ -2,4 +2,5 @@
 
 set -eux
 BUILD=goblint
-docker build -t "toxchat/c-toxcore:$BUILD" -f "other/docker/$BUILD/Dockerfile" .
+other/docker/sources/build
+docker build -t "toxchat/c-toxcore:$BUILD" -f "other/docker/$BUILD/$BUILD.Dockerfile" .

other/docker/infer/infer.Dockerfile

@@ -1,9 +1,7 @@
+FROM toxchat/c-toxcore:sources AS sources
 FROM toxchat/infer:latest
 
-COPY toxav/ /work/c-toxcore/toxav/
-COPY toxcore/ /work/c-toxcore/toxcore/
-COPY toxencryptsave/ /work/c-toxcore/toxencryptsave/
-COPY third_party/ /work/c-toxcore/third_party/
+COPY --from=sources /src/ /work/c-toxcore/
 RUN infer capture -- clang++ -fsyntax-only \
   $(pkg-config --cflags libconfig libsodium opus vpx) \
   /work/c-toxcore/toxav/*.c \

other/docker/infer/run

@@ -2,4 +2,5 @@
 
 set -eux
 BUILD=infer
-docker build -t "toxchat/c-toxcore:$BUILD" -f "other/docker/$BUILD/Dockerfile" .
+other/docker/sources/build
+docker build -t "toxchat/c-toxcore:$BUILD" -f "other/docker/$BUILD/$BUILD.Dockerfile" .

other/docker/misra/Makefile

@@ -155,7 +155,12 @@ SUPPRESSIONS += 21.10
 
 CPPFLAGS := -DCMP_NO_FLOAT=1 -DMIN_LOGGER_LEVEL=LOGGER_LEVEL_TRACE
 
-SOURCES := $(shell find /src/workspace/c-toxcore -name "*.c")
+FIND_FLAGS := -name "*.c"								\
+			  -and -not -wholename "*/auto_tests/*"		\
+			  -and -not -wholename "*/other/*"			\
+			  -and -not -wholename "*/super_donators/*"	\
+			  -and -not -wholename "*/third_party/*"
+SOURCES := $(shell find /src/workspace/c-toxcore $(FIND_FLAGS))
 
 analyse: $(DUMPS:.dump=.diag)
 	cppcheck --error-exitcode=1 -j8 --addon=misra --suppress=doubleFree $(patsubst %,--suppress=misra-c2012-%,$(SUPPRESSIONS)) $(CPPFLAGS) $(SOURCES)

other/docker/misra/misra.Dockerfile

@@ -1,3 +1,4 @@
+FROM toxchat/c-toxcore:sources AS sources
 FROM ubuntu:20.04
 
 RUN apt-get update && \
@@ -12,10 +13,7 @@ RUN apt-get update && \
  && apt-get clean \
  && rm -rf /var/lib/apt/lists/*
 
-COPY toxav/ /src/workspace/c-toxcore/toxav/
-COPY toxcore/ /src/workspace/c-toxcore/toxcore/
-COPY toxencryptsave/ /src/workspace/c-toxcore/toxencryptsave/
-COPY third_party/cmp/cmp.h /src/workspace/c-toxcore/third_party/cmp/cmp.h
+COPY --from=sources /src/ /src/workspace/c-toxcore/
 COPY other/docker/misra/Makefile /src/workspace/
 WORKDIR /src/workspace
 RUN ["make"]

other/docker/misra/run

@@ -2,4 +2,5 @@
 
 set -eux
 BUILD=misra
-docker build -t "toxchat/c-toxcore:$BUILD" -f "other/docker/$BUILD/Dockerfile" .
+other/docker/sources/build
+docker build -t "toxchat/c-toxcore:$BUILD" -f "other/docker/$BUILD/$BUILD.Dockerfile" .

other/docker/sources/Dockerfile

@@ -1,17 +0,0 @@
-FROM scratch
-
-# Roughly in order of change frequency.
-COPY third_party/ /src/third_party/
-COPY .github/scripts/flags*.sh /src/.github/scripts/
-COPY other/proxy/ /src/other/proxy/
-COPY cmake/ /src/cmake/
-COPY other/bootstrap_daemon/ /src/other/bootstrap_daemon/
-COPY other/pkgconfig/ /src/other/pkgconfig/
-COPY other/rpm/ /src/other/rpm/
-COPY other/*.[ch] /src/other/
-COPY CMakeLists.txt so.version /src/
-COPY toxencryptsave/ /src/toxencryptsave/
-COPY testing/ /src/testing/
-COPY toxav/ /src/toxav/
-COPY toxcore/ /src/toxcore/
-COPY auto_tests/ /src/auto_tests/

other/docker/sources/build

@@ -0,0 +1,5 @@
+#!/bin/sh
+
+set -eux
+BUILD=sources
+docker build -t "toxchat/c-toxcore:$BUILD" -f "other/docker/$BUILD/$BUILD.Dockerfile" .

other/docker/sources/sources.Dockerfile

@@ -0,0 +1,2 @@
+FROM scratch
+COPY . /src/

other/docker/sources/sources.Dockerfile.dockerignore

@@ -0,0 +1,22 @@
+# Ignore everything ...
+**/*
+# ... except sources
+!**/*.[ch]
+!**/*.cc
+!**/*.hh
+!CHANGELOG.md
+!LICENSE
+!README.md
+!auto_tests/data/*
+!other/bootstrap_daemon/bash-completion/**
+!other/bootstrap_daemon/tox-bootstrapd.*
+!other/proxy/*.mod
+!other/proxy/*.sum
+!other/proxy/*.go
+# ... and CMake build files (used by most builds).
+!**/CMakeLists.txt
+!.github/scripts/flags*.sh
+!cmake/*.cmake
+!other/pkgconfig/*
+!other/rpm/*
+!so.version

other/docker/tcc/run

@@ -2,4 +2,5 @@
 
 set -eux
 BUILD=tcc
-docker build -t "toxchat/c-toxcore:$BUILD" -f "other/docker/$BUILD/Dockerfile" .
+other/docker/sources/build
+docker build -t "toxchat/c-toxcore:$BUILD" -f "other/docker/$BUILD/$BUILD.Dockerfile" .

other/docker/tcc/tcc.Dockerfile

@@ -1,3 +1,4 @@
+FROM toxchat/c-toxcore:sources AS sources
 FROM ubuntu:22.04
 
 RUN apt-get update && \
@@ -12,12 +13,7 @@ RUN apt-get update && \
  && rm -rf /var/lib/apt/lists/*
 
 WORKDIR /work
-COPY auto_tests/ /work/auto_tests/
-COPY testing/ /work/testing/
-COPY toxav/ /work/toxav/
-COPY toxcore/ /work/toxcore/
-COPY toxencryptsave/ /work/toxencryptsave/
-COPY third_party/ /work/third_party/
+COPY --from=sources /src/ /work/
 
 SHELL ["/bin/bash", "-o", "pipefail", "-c"]
 

other/docker/tokstyle/run

@@ -2,4 +2,5 @@
 
 set -eux
 BUILD=tokstyle
-docker build -t "toxchat/c-toxcore:$BUILD" -f "other/docker/$BUILD/Dockerfile" .
+other/docker/sources/build
+docker build -t "toxchat/c-toxcore:$BUILD" -f "other/docker/$BUILD/$BUILD.Dockerfile" .

other/docker/tokstyle/tokstyle.Dockerfile

@@ -1,3 +1,4 @@
+FROM toxchat/c-toxcore:sources AS sources
 FROM toxchat/haskell:hs-tokstyle AS tokstyle
 FROM ubuntu:22.04
 
@@ -15,8 +16,11 @@ RUN apt-get update && \
 COPY --from=tokstyle /bin/check-c /bin/
 RUN ["git", "clone", "--depth=1", "https://github.com/TokTok/hs-tokstyle", "/src/workspace/hs-tokstyle"]
 
-COPY toxav/ /src/workspace/c-toxcore/toxav/
-COPY toxcore/ /src/workspace/c-toxcore/toxcore/
-COPY toxencryptsave/ /src/workspace/c-toxcore/toxencryptsave/
-COPY third_party/cmp/cmp.h /src/workspace/c-toxcore/third_party/cmp/cmp.h
-RUN /bin/check-c $(find /src/workspace/c-toxcore -name "*.c")
+COPY --from=sources /src/ /src/workspace/c-toxcore/
+RUN /bin/check-c $(find /src/workspace/c-toxcore -name "*.c" \
+ -and -not -wholename "*/auto_tests/*" \
+ -and -not -wholename "*/other/*" \
+ -and -not -wholename "*/super_donators/*" \
+ -and -not -wholename "*/testing/*" \
+ -and -not -wholename "*/third_party/cmp/examples/*" \
+ -and -not -wholename "*/third_party/cmp/test/*")