Motd update

Dockerfile

@@ -2,7 +2,8 @@ FROM alpine:3.22
 
 RUN apk update && apk upgrade && apk add --no-cache \
     git \
-    docker \
+    docker-cli \
+    docker-cli-compose \
     bash \
     fish \
     zsh \
@@ -29,9 +30,15 @@ COPY service.ssh.sh /app/
 COPY service.ttyd.sh /app/
 RUN chmod +x /app/entrypoint.sh /app/service.ssh.sh /app/service.ttyd.sh
 
+COPY motd.txt /etc/motd
+
 RUN mkdir -p /srv/stack
 WORKDIR /srv/stack
 
+# Set environment variable for Docker Compose project name
+# This is needed because inside ttyd docker compose defaults to hostname + directory for the project name
+ENV COMPOSE_PROJECT_NAME=stack
+
 EXPOSE 22 1234
 
 ENTRYPOINT ["/app/entrypoint.sh"]

entrypoint.sh

@@ -22,6 +22,22 @@ if [ ! -f /etc/ssh/ssh_host_rsa_key ]; then
     ssh-keygen -A
 fi
 
+if [ -f /etc/ssh/sshd_config -a `cat /etc/ssh/sshd_config | wc -l` = 1 ]; then
+    echo "sshd_config is not complete, regenerating..."
+    rm -f /etc/ssh/sshd_config
+fi
+
+if [ ! -f /etc/ssh/sshd_config ]; then
+    echo "Include /etc/ssh/sshd_config.d/*.conf" > /etc/ssh/sshd_config
+    echo "PermitRootLogin yes" >> /etc/ssh/sshd_config
+    echo "AuthorizedKeysFile .ssh/authorized_keys" >> /etc/ssh/sshd_config
+    echo "PasswordAuthentication yes" >> /etc/ssh/sshd_config
+    echo "AllowTcpForwarding no" >> /etc/ssh/sshd_config
+    echo "GatewayPorts no" >> /etc/ssh/sshd_config
+    echo "X11Forwarding no" >> /etc/ssh/sshd_config
+    echo "Subsystem sftp internal-sftp" >> /etc/ssh/sshd_config
+fi
+
 # Array to store child PIDs
 declare -a CHILD_PIDS=()
 

service.ssh.sh

@@ -1,3 +1,18 @@
 #!/bin/sh
 
-exec /usr/sbin/sshd -D
+if [ ! -e /etc/ssh/sshd_config ]; then
+    mkdir -p /etc/ssh/sshd_config.d
+    echo "Include /etc/ssh/sshd_config.d/*.conf
+PermitRootLogin yes
+AuthorizedKeysFile .ssh/authorized_keys
+PasswordAuthentication yes
+AllowTcpForwarding yes
+GatewayPorts no
+X11Forwarding no
+Subsystem sftp internal-sftp" > /etc/ssh/sshd_config
+fi
+
+# Cloud image generates this file which prevents sshd from accepting passwords
+rm -f /etc/ssh/sshd_config.d/50-cloud-init.conf
+
+exec /usr/sbin/sshd -E /var/log/sshd.log -D