feat: add tor entrypoint script for use in dashmate (#4182)

* feat: add entrypoint for tor features in dashmate

* fix: use spaces consistently for indendation

* fix: output blank line after info

* fix: ensure script is executable

* fix: keep linter happy

Author: strophy

docker/Dockerfile.GitHubActions

@@ -34,6 +34,9 @@ USER dash
 
 VOLUME ["/dash"]
 
+COPY docker-entrypoint.sh /docker-entrypoint.sh
+ENTRYPOINT ["/docker-entrypoint.sh"]
+
 EXPOSE 9998 9999 19998 19999
 
 WORKDIR /dash

docker/docker-entrypoint.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+export LC_ALL=C
+set -e
+
+# Get Tor service IP if running
+if [[ "$1" == "dashd" ]]; then
+  # Because dashd only accept torcontrol= host as an ip only, we resolve it here and add to config
+  if [[ "$TOR_CONTROL_HOST" ]] && [[ "$TOR_CONTROL_PORT" ]] && [[ "$TOR_PROXY_PORT" ]]; then
+    TOR_IP=$(getent hosts $TOR_CONTROL_HOST | cut -d ' ' -f 1)
+    echo "proxy=$TOR_IP:$TOR_PROXY_PORT" >> "$HOME/.dashcore/dash.conf"
+    echo "Added "proxy=$TOR_IP:$TOR_PROXY_PORT" to $HOME/.dashcore/dash.conf"
+    echo "torcontrol=$TOR_IP:$TOR_CONTROL_PORT" >> "$HOME/.dashcore/dash.conf"
+    echo "Added "torcontrol=$TOR_IP:$TOR_CONTROL_PORT" to $HOME/.dashcore/dash.conf"
+    echo -e "\n"
+  else
+    echo "Tor control credentials not provided"
+  fi
+fi
+
+exec "$@"