Adding Docker files.

.dockerignore

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+*.md
+
+.git*
+
+Dockerfile
+.dockerignore

Dockerfile

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+FROM frolvlad/alpine-glibc:alpine-3.5_glibc-2.24
+
+ARG TS3SERVER_URL="http://teamspeak.gameserver.gamed.de/ts3/releases/3.0.13.6/teamspeak3-server_linux_amd64-3.0.13.6.tar.bz2"
+ARG TS3SERVER_SHA384="c126cb43098c3ccd8f0eaaa871cc128ecda21261a1a862815ffc5bd6e8ed8dd45dff862a222ccfebe670a6dd5df4dfbb"
+
+ADD ${TS3SERVER_URL} "/ts3server.tar.bz2"
+RUN \
+  apk --no-cache add --virtual .build-deps \
+    coreutils \
+    tar \
+    && \
+\
+  echo "Validating checksum..." && \
+  TS3SERVER_ACTUAL_SHA384="$(sha384sum /ts3server.tar.bz2 | awk '{print $1}')" && \
+  if [ "${TS3SERVER_ACTUAL_SHA384}" != "${TS3SERVER_SHA384}" ]; then echo "Invalid checksum: ${TS3SERVER_ACTUAL_SHA384} != ${TS3SERVER_SHA384}" >&2; exit 1; fi && \
+\
+  mkdir -vp /opt/teamspeak3 && \
+  tar -v -C /opt/teamspeak3 -xf /ts3server.tar.bz2 --strip 1 && \
+\
+  rm -vr \
+    /ts3server.tar.bz2 \
+    && \
+  rm -vrf \
+    /opt/teamspeak3/*.sh \
+    /opt/teamspeak3/CHANGELOG \
+    /opt/teamspeak3/doc \
+    /opt/teamspeak3/redist \
+    /opt/teamspeak3/serverquerydocs \
+    /opt/teamspeak3/tsdns \
+    /tmp/* \
+    /var/tmp/* \
+    && \
+  ls -lAh /opt/teamspeak3 && \
+  apk --no-cache del .build-deps
+
+COPY docker-entrypoint.sh /usr/local/bin/docker-entrypoint
+RUN chmod +x /usr/local/bin/docker-entrypoint
+
+RUN \
+  for path in \
+    files \
+    logs \
+    query_ip_blacklist.txt \
+    query_ip_whitelist.txt \
+    ts3server.sqlitedb; \
+  do \
+    ln -vsf "/data/${path}" "/opt/teamspeak3/${path}"; \
+  done
+
+ENTRYPOINT ["docker-entrypoint"]

docker-entrypoint.sh

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+#!/bin/sh -e
+
+# files and directories that should exist beforehand
+mkdir -p \
+  /data/files \
+  /data/logs
+touch \
+  /data/query_ip_blacklist.txt \
+  /data/query_ip_whitelist.txt \
+  /data/ts3server.sqlitedb
+
+LD_LIBRARY_PATH="/opt/teamspeak3:${LD_LIBRARY_PATH}"
+export LD_LIBRARY_PATH
+
+/opt/teamspeak3/ts3server "$@" &
+TS3SERVER_PID=$!
+
+trap 'kill -2 ${TS3SERVER_PID}' INT
+trap 'kill -15 ${TS3SERVER_PID}' TERM
+
+wait ${TS3SERVER_PID}