Improve docker build files

* Update alpine to 3.18
* Build using docker build, without additional commands
* Make the result runnable

.github/workflows/ccpp.yml

@@ -50,7 +50,7 @@ jobs:
     - name: prepare
       run: git submodule update --init
     - name: build-static
-      run: sudo docker build -t sipp-build docker && sudo docker run -v $PWD:/src sipp-build
+      run: docker build -f docker/Dockerfile --output=. --target=bin .
     - uses: actions/[email protected]
       with:
          name: sipp

README.md

@@ -70,8 +70,7 @@ the following commands:
 
 ```
 git submodule update --init
-docker build -t sipp-build -f docker/Dockerfile docker
-docker run --rm -v $PWD:/src sipp-build
+docker build -t sipp -f docker/Dockerfile .
 ```
 
 # Support
@@ -104,8 +103,7 @@ list](https://lists.sourceforge.net/lists/listinfo/sipp-users).
   (for ~rcX) with a period.
 * Create a static binary and upload this to github as well:
     ```
-    sudo docker build -t sipp-build docker &&
-      sudo docker run -it -v $PWD:/src sipp-build
+    sudo docker build -t sipp -f docker/Dockerfile .
     ```
 * Note that the static build is broken at the moment. See `ldd sipp`.
 

docker/Dockerfile

@@ -1,5 +1,34 @@
-FROM alpine:3.10
+# Usage (from within the git repo):
+#   git submodule update --init
+#   docker build -t sipp -f docker/Dockerfile .
 
-RUN apk add --no-cache binutils make cmake gcc g++ ncurses-static libpcap-dev ncurses-dev gsl-dev git
+FROM alpine:3.18 AS build
 
-CMD cd /src && rm -f CMakeCache.txt && cmake . -DBUILD_STATIC=1 -DUSE_PCAP=1 -DUSE_GSL=1 && make 
+RUN apk add --no-cache \
+  binutils \
+  cmake \
+  g++ \
+  gcc \
+  git \
+  gsl-dev \
+  gsl-static \
+  libpcap-dev \
+  make \
+  ncurses-dev \
+  ncurses-static \
+  ninja
+
+WORKDIR /sipp
+COPY CMakeLists.txt ./
+COPY src src
+COPY include include
+COPY gtest gtest
+RUN --mount=type=bind,target=.git,source=.git cmake . -G Ninja -DBUILD_STATIC=1 -DUSE_PCAP=1 -DUSE_GSL=1
+RUN ninja
+
+FROM scratch AS bin
+COPY --from=build /sipp/sipp /sipp
+
+FROM alpine:3.18
+CMD ["sipp"]
+COPY --from=build /sipp/sipp /usr/local/bin/sipp

docker/Dockerfile.full

@@ -1,29 +1,39 @@
-FROM alpine:3.13
+# Usage (from within the git repo):
+#   git submodule update --init
+#   docker build -t sipp:full -f docker/Dockerfile.full .
+
+FROM alpine:3.18 AS build
 
 RUN apk add --no-cache \
   binutils \
-  make \
   cmake \
-  gcc \
   g++ \
+  gcc \
   git \
-  ncurses-dev \
-  ncurses-static \
-  libpcap-dev \
   gsl-dev \
   gsl-static \
-  openssl-dev \
-  openssl-libs-static \
+  libpcap-dev \
   linux-headers \
   lksctp-tools-dev \
-  lksctp-tools-static
+  lksctp-tools-static \
+  make \
+  ncurses-dev \
+  ncurses-static \
+  ninja \
+  openssl-dev \
+  openssl-libs-static
 
-CMD cd /src \
-  && rm -f CMakeCache.txt \
-  && cmake . -DBUILD_STATIC=1 -DUSE_PCAP=1 -DUSE_GSL=1 -DUSE_SSL=1 -DUSE_SCTP=1 \
-  && make
+WORKDIR /sipp
+COPY CMakeLists.txt ./
+COPY src src
+COPY include include
+COPY gtest gtest
+RUN --mount=type=bind,target=.git,source=.git cmake . -G Ninja -DBUILD_STATIC=1 -DUSE_PCAP=1 -DUSE_GSL=1 -DUSE_SSL=1 -DUSE_SCTP=1
+RUN ninja
 
-# Usage (from within the git repo):
-#   git submodule update --init
-#   docker build -t sipp-build -f docker/Dockerfile.full docker
-#   docker run -v $PWD:/src sipp-build
+FROM scratch AS bin
+COPY --from=build /sipp/sipp /sipp
+
+FROM alpine:3.18
+CMD ["sipp"]
+COPY --from=build /sipp/sipp /usr/local/bin/sipp