add ftp server

bonus/srcs/requirements/ftp/Dockerfile

@@ -0,0 +1,15 @@
+FROM debian:bookworm-slim
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    vsftpd \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY conf/vsftpd.conf /etc/vsftpd.conf
+COPY tools/entrypoint.sh /usr/local/bin/entrypoint.sh
+
+RUN echo "/usr/sbin/nologin" >> /etc/shells \
+    && chmod +x /usr/local/bin/entrypoint.sh
+
+EXPOSE 21 21100-21110
+
+ENTRYPOINT ["entrypoint.sh"]

bonus/srcs/requirements/ftp/conf/vsftpd.conf

@@ -0,0 +1,19 @@
+listen=YES
+listen_ipv6=NO
+
+anonymous_enable=NO
+local_enable=YES
+write_enable=YES
+
+chroot_local_user=YES
+allow_writeable_chroot=YES
+local_umask=022
+
+pasv_enable=YES
+pasv_min_port=21100
+pasv_max_port=21110
+
+seccomp_sandbox=NO
+
+xferlog_enable=YES
+dual_log_enable=YES

bonus/srcs/requirements/ftp/tools/entrypoint.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+set -e
+
+mkdir -p /var/run/vsftpd/empty
+
+FTP_PASSWORD=$(cat /run/secrets/ftp_password)
+
+if ! id "${FTP_USER}" >/dev/null 2>&1; then
+    useradd -o -u 33 -g www-data -d /var/www/html -s /usr/sbin/nologin "${FTP_USER}"
+fi
+
+echo "${FTP_USER}:${FTP_PASSWORD}" | chpasswd
+
+exec /usr/sbin/vsftpd /etc/vsftpd.conf