Create static Mg and use FROM scratch stage to reduce image size

We don't need to carry an entire Alpine installation just to run Mg, and thanks to musl libc's ability to build actual static binaries we now use Docker only for shipping our static binary. At a fraction of the size! Signed-off-by: Joachim Wiberg <[email protected]>
troglobit · Aug 9, 2023 · 6467bd5 · 6467bd5
1 parent efe8798
commit 6467bd5
Showing 1 changed file with 5 additions and 3 deletions.
diff --git a/Dockerfile b/Dockerfile
@@ -13,10 +13,12 @@ RUN apk --no-cache add --virtual .build-dependencies \
 
 WORKDIR /root
 COPY . ./
-RUN git clean -fdx; ./autogen.sh && \
-    ./configure --prefix=/usr --sysconfdir=/etc --localstatedir=/var && make install-strip
+RUN git clean -fdx
+RUN ./autogen.sh
+RUN ./configure --prefix=/usr --sysconfdir=/etc --localstatedir=/var CFLAGS=-static
+RUN make install-strip
 
-FROM alpine:latest
+FROM scratch
 
 COPY --from=0 /usr/bin/mg /usr/bin/mg
 COPY --from=0 /usr/share/doc/mg /usr/share/doc/mg