fix: could not open TUN/TAP device: No such file or director

Signed-off-by: gythialy <gythialy.koo+github@gmail.com>

Author: gythialy

Dockerfile

@@ -1,26 +1,13 @@
-FROM alpine:3.13 as builder
+FROM alpine:3.14
 
-ARG ZT_COMMIT=e8f7d5ef9e7ba6be0b2163cfa31f8817ba5b18f4
-
-RUN apk add --update alpine-sdk linux-headers \
-  && git clone --quiet https://github.com/zerotier/ZeroTierOne.git /src \
-  && git -C src reset --quiet --hard ${ZT_COMMIT} \
-  && cd /src \
-  && make -f make-linux.mk
-
-FROM alpine:3.13
 LABEL version="1.6.5"
 LABEL description="ZeroTier One moon as Docker Image"
 
-RUN apk add --update --no-cache libc6-compat libstdc++
+RUN apk add --no-cache zerotier-one=1.6.5-r0
 
+# ZeroTier relies on UDP port 9993
 EXPOSE 9993/udp
 
-COPY --from=builder /src/zerotier-one /usr/sbin/
-RUN mkdir -p /var/lib/zerotier-one \
-  && ln -s /usr/sbin/zerotier-one /usr/sbin/zerotier-idtool \
-  && ln -s /usr/sbin/zerotier-one /usr/sbin/zerotier-cli
-
 COPY start-moon.sh /start-moon.sh
 
 ENTRYPOINT ["/start-moon.sh"]

docker-compose.yaml

@@ -1,9 +1,14 @@
-version: '3.5'
+version: "3.5"
 
 services:
   zerotier-moon:
     image: gythialy/zerotier-one-moon:lastest
     container_name: zerotier-moon
+    cap_add:
+      - NET_ADMIN
+      - SYS_ADMIN
+    devices:
+      - /dev/net/tun
     ports:
       - 9993:9993/udp
     command:

start-moon.sh

@@ -3,6 +3,8 @@
 # borrowed from https://github.com/rwv/docker-zerotier-moon
 # usage ./start-moon.sh -4 1.2.3.4 -6 2001:abcd:abcd::1 -p 9993
 
+export PATH=/bin:/usr/bin:/usr/local/bin:/sbin:/usr/sbin
+
 moon_port=9993 # default ZeroTier moon port
 
 while getopts "4:6:p:" arg; do # handle args
@@ -43,7 +45,7 @@ else                                # ipv4 address is set
 fi
 
 # trim whitespace
-stableEndpointsForSed="$(echo -e "${stableEndpointsForSed}" | tr -d '[:space:]')"
+stableEndpointsForSed="$(echo "${stableEndpointsForSed}" | tr -d '[:space:]')"
 echo "stableEndpoints: $stableEndpointsForSed"
 
 if [ -d "/var/lib/zerotier-one/moons.d" ]; then # check if the moons conf has generated