wip: migrate to mono-repo. SPN has already been moved to spn/

spn/tools/Dockerfile

@@ -0,0 +1,23 @@
+FROM alpine as builder
+
+# Ensure ca-certficates are up to date
+# RUN update-ca-certificates
+
+# Download and verify portmaster-start binary.
+RUN mkdir /init
+RUN wget https://updates.safing.io/linux_amd64/start/portmaster-start_v0-9-6 -O /init/portmaster-start 
+COPY start-checksum.txt /init/start-checksum
+RUN cd /init && sha256sum -c /init/start-checksum
+RUN chmod 555 /init/portmaster-start
+
+# Use minimal image as base.
+FROM alpine
+
+# Copy the static executable.
+COPY --from=builder /init/portmaster-start /init/portmaster-start 
+
+# Copy the init script
+COPY container-init.sh /init.sh
+
+# Run the hub.
+ENTRYPOINT ["/init.sh"]