smaller docker image

Author: mattn

Dockerfile

@@ -1,17 +1,17 @@
-FROM debian:buster-slim AS build-dev
+FROM alpine:3.19 AS build-dev
 
 WORKDIR /app/src
 COPY --link . .
 
-RUN apt-get update && \
-    apt-get install -y gcc g++ cmake
+RUN apk add --no-cache gcc musl-dev g++ cmake make linux-headers
 
 ENV CC=/usr/bin/gcc \
     CXX=/usr/bin/g++
 
-RUN cmake -S . -B build -DCMAKE_BUILD_TYPE=Release && cmake --build build --target example-file
+RUN cmake -S . -B build -DCMAKE_BUILD_TYPE=Release && \
+    cmake --build build --target example-file
 
-FROM bitnami/minideb:bookworm
+FROM alpine:3.19
 
 RUN mkdir -p /app/public
 COPY --from=build-dev /app/src/build/example/file/example-file /app/file