WIP: Add startup script using environment to configure

.env.example

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+TM_IP_ADDRESS=192.168.1.100
+TM_SUBNET=192.168.1.0
+TM_GATEWAY=192.168.1.1
+TM_PASSWORD=p@55w0rd
+TM_BACKUP_PATH=/path/to/backup-drive

.gitignore

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+.env
 *.swp
 multi-user/

start-timemachine.sh

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+#!/bin/sh
+# This script creates a macvlan network to place the docker container
+# directly on the host network. This allows services to be broadcast
+# so the TimeMachine host shows up in Finder without needing to run
+# -net=host, which can conflict with host & introduce security issues.
+#
+# Step 1: Get vars from .env file
+export $(grep -v '^#' .env | xargs)
+
+# Step 2: Create network if not already present
+if ! docker network list | grep macvlan ; then \
+  docker network create \
+    -d macvlan \
+    --subnet=$TM_SUBNET/24 \
+    --gateway=$TM_GATEWAY \
+    -o parent=eth0 macvlan1
+fi
+
+# Step 3: Create and start docker container if not already present
+if ! docker ps | grep timemachine ; then \
+  docker run -d --restart=always \
+    --name timemachine \
+    --hostname timemachine \
+    --network macvlan1 \
+    --ip $TM_IP_ADDRESS \
+    -p 137:137/udp \
+    -p 138:138/udp \
+    -p 139:139 \
+    -p 445:445 \
+    -e ADVERTISED_HOSTNAME="TimeMachine" \
+    -e CUSTOM_SMB_CONF="false" \
+    -e CUSTOM_USER="false" \
+    -e DEBUG_LEVEL="1" \
+    -e HIDE_SHARES="no" \
+    -e EXTERNAL_CONF="" \
+    -e MIMIC_MODEL="TimeCapsule8,119" \
+    -e TM_USERNAME="timemachine" \
+    -e TM_GROUPNAME="timemachine" \
+    -e TM_UID="1000" \
+    -e TM_GID="1000" \
+    -e PASSWORD="$TM_PASSWORD" \
+    -e SET_PERMISSIONS="false" \
+    -e SHARE_NAME="Backups" \
+    -e SMB_INHERIT_PERMISSIONS="no" \
+    -e SMB_NFS_ACES="yes" \
+    -e SMB_METADATA="stream" \
+    -e SMB_PORT="445" \
+    -e SMB_VFS_OBJECTS="acl_xattr fruit streams_xattr" \
+    -e VOLUME_SIZE_LIMIT="0" \
+    -e WORKGROUP="WORKGROUP" \
+    -v $TM_BACKUP_PATH:/opt/timemachine \
+    -v timemachine-var-lib-samba:/var/lib/samba \
+    -v timemachine-var-cache-samba:/var/cache/samba \
+    -v timemachine-run-samba:/run/samba \
+    mbentley/timemachine:smb
+fi