Alpine Linux platform support #148
Description
I'm trying to deploy noderfc under Alpine Linux (specifically node-red docker), but it seems like I might be having issues with ldconfig.
My dockerfile builds, but when my program runs I get the following error:
Error: Error relocating /usr/local/sap/nwrfcsdk/lib/libsapnwrfc.so: __strdup: symbol not found
This is a really similar error as this one, so I am assuming this is an ldconfig problem. However I'm learning that under alpine ldconfig is somehow different from other mainstream linux distros.
I read that under alpine linux LD_LIBRARY_PATH=/usr/local/sap/nwrfcsdk/lib should accomplish the same as loading the /etc/ld.so.conf.d/nwrfcsdk.conf with ldconfig as you would do in other distros, but clearly something isn't working.
Any ideas?
Here is my dockerfile (scroll to #### SAP RFC Stuff, the rest is standard node-red dockerfile).
P.S. There is a curl command to pull the nwrfcsdk.zip file from a local server since I do not think SAP hosts this file for public download - if I'm wrong about that please let me know so I can make a dockerfile that will work for everyone.
ARG ARCH=amd64
ARG NODE_VERSION=10
ARG OS=alpine
#### Stage BASE ########################################################################################################
FROM ${ARCH}/node:${NODE_VERSION}-${OS} AS base
# Copy scripts
COPY scripts/*.sh /tmp/
# Install tools, create Node-RED app and data dir, add user and set rights
RUN set -ex && \
apk add --no-cache \
bash \
tzdata \
iputils \
curl \
nano \
git \
openssl \
openssh-client && \
mkdir -p /usr/src/node-red /data && \
deluser --remove-home node && \
adduser -h /usr/src/node-red -D -H node-red -u 1000 && \
chown -R node-red:root /data && chmod -R g+rwX /data && \
chown -R node-red:root /usr/src/node-red && chmod -R g+rwX /usr/src/node-red
# chown -R node-red:node-red /data && \
# chown -R node-red:node-red /usr/src/node-red
# Set work directory
WORKDIR /usr/src/node-red
# package.json contains Node-RED NPM module and node dependencies
COPY package.json .
#### Stage BUILD #######################################################################################################
FROM base AS build
# Install Build tools
RUN apk add --no-cache --virtual buildtools build-base linux-headers udev python && \
npm install --unsafe-perm --no-update-notifier --only=production && \
/tmp/remove_native_gpio.sh && \
cp -R node_modules prod_node_modules
#### Stage RELEASE #####################################################################################################
FROM base AS RELEASE
ARG BUILD_DATE
ARG BUILD_VERSION
ARG BUILD_REF
ARG NODE_RED_VERSION
ARG ARCH
ARG TAG_SUFFIX=default
LABEL org.label-schema.build-date=${BUILD_DATE} \
org.label-schema.docker.dockerfile=".docker/Dockerfile.alpine" \
org.label-schema.license="Apache-2.0" \
org.label-schema.name="Node-RED" \
org.label-schema.version=${BUILD_VERSION} \
org.label-schema.description="Low-code programming for event-driven applications." \
org.label-schema.url="https://nodered.org" \
org.label-schema.vcs-ref=${BUILD_REF} \
org.label-schema.vcs-type="Git" \
org.label-schema.vcs-url="https://github.com/node-red/node-red-docker" \
org.label-schema.arch=${ARCH} \
authors="Dave Conway-Jones, Nick O'Leary, James Thomas, Raymond Mouthaan"
COPY --from=build /usr/src/node-red/prod_node_modules ./node_modules
# Chown, install devtools & Clean up
RUN chown -R node-red:root /usr/src/node-red && \
/tmp/install_devtools.sh && \
rm -r /tmp/*
USER node-red
# Env variables
ENV NODE_RED_VERSION=$NODE_RED_VERSION \
NODE_PATH=/usr/src/node-red/node_modules:/data/node_modules \
FLOWS=flows.json
# ENV NODE_RED_ENABLE_SAFE_MODE=true # Uncomment to enable safe start mode (flows not running)
# ENV NODE_RED_ENABLE_PROJECTS=true # Uncomment to enable projects option
#### SAP RFC Stuff
# Install SAP RFC per these instructions
# http://sap.github.io/node-rfc/install.html#sap-nw-rfc-library-installation
USER root
RUN mkdir -p /usr/local/sap/nwrfcsdk
ENV SAPNWRFC_HOME /usr/local/sap/nwrfcsdk
WORKDIR ${SAPNWRFC_HOME}
RUN curl -O http://some-local-host.net/saprfc/nwrfc750P_4-70002752.zip
RUN unzip nwrfc750P_4-70002752.zip
RUN mv nwrfcsdk/* ./
RUN rmdir nwrfcsdk
RUN rm nwrfc750P_4-70002752.zip
ENV LD_LIBRARY_PATH /usr/local/sap/nwrfcsdk/lib
RUN apk add cmake
RUN apk add libuuid
USER node-red
ENV SAPNWRFC_HOME /usr/local/sap/nwrfcsdk
ENV LD_LIBRARY_PATH /usr/local/sap/nwrfcsdk/lib
WORKDIR /data
RUN npm install node-rfc
RUN npm install node-red-contrib-saprfc
### END SAP RFC Stuff
WORKDIR /usr/src/node-red
# User configuration directory volume
VOLUME ["/data"]
# Expose the listening port of node-red
EXPOSE 1880
# Add a healthcheck (default every 30 secs)
# HEALTHCHECK CMD curl http://localhost:1880/ || exit 1
ENTRYPOINT ["npm", "start", "--cache", "/data/.npm", "--", "--userDir", "/data"]