create admin user automatically

Dockerfile

@@ -3,6 +3,8 @@ FROM ubuntu:bionic
 
 ENV DEBIAN_FRONTEND noninteractive
 
+ENV DEFAULT_ADMIN_PASSWORD hunter2
+
 ARG UBUNTU_MIRROR=http://archive.ubuntu.com/ubuntu
 
 RUN echo "deb $UBUNTU_MIRROR bionic main universe restricted multiverse" > /etc/apt/sources.list.new && \

README.md

@@ -23,6 +23,13 @@ on 20.04 but its build file doesn't work with modern `scons`, sadly.
 
 # Docker Image Information
 
+* env:
+    * `DEFAULT_ADMIN_PASSWORD`: set to the admin password you want for the
+      `admin` user.  default: `hunter2`.  Note that passwords are stored
+      unhashed in plaintext on disk (take it up with the duck, I just
+      packaged it)
+        * no-op if `/config/users.txt` already exists, which it will after
+          first run.
 * state/config volume: `/config`
 * logs to stdout like a good docker
 

root/etc/service/adchpp/run

@@ -15,5 +15,9 @@ if [[ ! -d /config/certs ]]; then
     bash /usr/local/src/adchpp/linux/generate_certs.sh
 fi
 
+if [[ ! -e /config/users.txt ]]; then
+    echo "[{\"password\":\"$DEFAULT_ADMIN_PASSWORD\",\"nick\":\"admin\",\"level\":10,\"regby\":\"admin\",\"regtime\":1322835912}]" > /config/users.txt
+fi
+
 cd /config
 exec /usr/local/bin/adchppd -c /config