Initial release

bind/Dockerfile

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+# Copyright 2026 jCloud Services GbR
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+#     http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+FROM debian:bookworm-slim
+
+WORKDIR /etc/bind
+
+RUN apt-get update && \
+    apt-get install -y bind9 bind9utils bind9-doc dnsutils && \
+    rm -rf /var/lib/apt/lists/*
+
+EXPOSE 53/udp
+EXPOSE 53/tcp
+
+CMD ["named", "-g", "-c", "/etc/bind/named.conf"]

bind/config/named.conf

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+options {
+    directory "/var/cache/bind";
+
+    listen-on { any; };
+
+    recursion no;
+    allow-query { any ;};
+
+    listen-on-v6 { any; };
+};
+
+zone "j-cloud.app" {
+    type master;
+    file "/etc/bind/zones/db.j-cloud.app";
+};

bind/config/zones/db.j-cloud.app

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+$TTL 60
+@   IN  SOA ns1.j-cloud.app. dnsadmin.j-cloud.app. (
+            2026032101 ; Serial
+            3600       ; Refresh
+            600        ; Retry
+            86400      ; Expire
+            300 )      ; Negative Cache TTL
+
+; Nameserver
+@   IN  NS  ns1.j-cloud.app.