c-lightning needs glibc and bin is taken from cyphernode clightning image

proxy_docker/Dockerfile

@@ -1,5 +1,21 @@
 FROM alpine:3.8
 
+# Taking care of glibc shit (glibc not natively supported by Alpine but lightning-cli uses it)
+
+ENV GLIBC_VERSION 2.27-r0
+ENV GLIBC_SHA256 938bceae3b83c53e7fa9cc4135ce45e04aae99256c5e74cf186c794b97473bc7
+ENV GLIBCBIN_SHA256 3a87874e57b9d92e223f3e90356aaea994af67fb76b71bb72abfb809e948d0d6
+# Download and install glibc (https://github.com/jeanblanchard/docker-alpine-glibc/blob/master/Dockerfile)
+RUN wget -O /etc/apk/keys/sgerrand.rsa.pub https://github.com/sgerrand/alpine-pkg-glibc/releases/download/$GLIBC_VERSION/sgerrand.rsa.pub \
+ && wget -O glibc.apk "https://github.com/sgerrand/alpine-pkg-glibc/releases/download/${GLIBC_VERSION}/glibc-${GLIBC_VERSION}.apk" \
+ && echo "$GLIBC_SHA256  glibc.apk" | sha256sum -c - \
+ && wget -O glibc-bin.apk "https://github.com/sgerrand/alpine-pkg-glibc/releases/download/${GLIBC_VERSION}/glibc-bin-${GLIBC_VERSION}.apk" \
+ && echo "$GLIBCBIN_SHA256  glibc-bin.apk" | sha256sum -c - \
+ && apk add --update --no-cache glibc-bin.apk glibc.apk \
+ && /usr/glibc-compat/sbin/ldconfig /lib /usr/glibc-compat/lib \
+ && echo 'hosts: files mdns4_minimal [NOTFOUND=return] dns mdns4' >> /etc/nsswitch.conf \
+ && rm -rf glibc.apk glibc-bin.apk
+
 ENV HOME /proxy
 
 RUN apk add --update --no-cache \
@@ -30,7 +46,7 @@ COPY app/script/getactivewatches.sh ${HOME}/getactivewatches.sh
 COPY app/script/manage_missed_conf.sh ${HOME}/manage_missed_conf.sh
 COPY app/script/tests.sh ${HOME}/tests.sh
 COPY app/script/tests-cb.sh ${HOME}/tests-cb.sh
-COPY app/bin/lightning-cli_x86 ${HOME}/lightning-cli
+COPY --from=cyphernode/clightning:v0.6.2 /usr/bin/lightning-cli ${HOME}/lightning-cli
 
 WORKDIR ${HOME}
 
@@ -41,4 +57,3 @@ RUN chmod +x startproxy.sh requesthandler.sh lightning-cli \
 VOLUME ["${HOME}/db", "${HOME}/.lightning"]
 
 ENTRYPOINT ["su-exec"]
-

proxy_docker/app/bin/README.md

@@ -1,5 +0,0 @@
-# Nota bene
-
-lightning-cli binary has been pre-compiled in an Alpine docker container.
-
-Use lightning-cli_arm for armhf architecture, lightning-cli_x86 for x86_64.