Add docker availability check to all scripts that use docker commands

22 scripts used docker without verifying it's present. Consistent with the
pattern already established in Docker_Essentials scripts. Added after acquire_lock
and before detect_hosts in each script's setup section.

Fallback/fallback.sh

@@ -263,6 +263,11 @@ fi
 
 acquire_lock   # strict single instance — notifies on collision
 
+if ! command -v docker &>/dev/null; then
+    error "Docker command not found"
+    exit 1
+fi
+
 detect_hosts
 resolve_remote_ip
 

Fallback/fallback_test.sh

@@ -151,6 +151,11 @@ fi
 
 acquire_lock   # strict single instance — modifies iptables and containers
 
+if ! command -v docker &>/dev/null; then
+    error "Docker command not found"
+    exit 1
+fi
+
 detect_hosts
 resolve_remote_ip
 

Media/lidarr_cleanup.sh

@@ -165,6 +165,11 @@ validate_unraid_cmd \
 [[ -n "${LIDARR_LOCK_WARN_AGE:-}" ]] && LOCK_WARN_AGE="$LIDARR_LOCK_WARN_AGE"
 acquire_lock "wait"
 
+if ! command -v docker &>/dev/null; then
+    error "Docker command not found"
+    exit 1
+fi
+
 # detect_hosts() sets MY_ID and aliases LIDARR_URL, LIDARR_API_KEY, LIDARR_MUSIC_ROOT
 detect_hosts
 

Media/radarr_cleanup.sh

@@ -151,6 +151,11 @@ validate_unraid_cmd \
 
 acquire_lock "wait"
 
+if ! command -v docker &>/dev/null; then
+    error "Docker command not found"
+    exit 1
+fi
+
 # detect_hosts() sets MY_ID and aliases RADARR_URL, RADARR_API_KEY, RADARR_MOVIES_ROOT
 detect_hosts
 

Media/sonarr_cleanup.sh

@@ -151,6 +151,11 @@ validate_unraid_cmd \
 
 acquire_lock "wait"
 
+if ! command -v docker &>/dev/null; then
+    error "Docker command not found"
+    exit 1
+fi
+
 # detect_hosts() sets MY_ID and aliases SONARR_URL, SONARR_API_KEY, SONARR_TV_ROOT
 detect_hosts
 

Orchestrators/array_stopping.sh

@@ -60,6 +60,11 @@ validate_unraid_cmd \
 
 acquire_lock
 
+if ! command -v docker &>/dev/null; then
+    error "Docker command not found"
+    exit 1
+fi
+
 detect_hosts
 
 [[ "$DRY_RUN" == true ]] && warn "DRY RUN — no stop scripts will be executed"

Orchestrators/daily_sync_maintenance.sh

@@ -88,6 +88,11 @@ validate_unraid_cmd \
     "" "" \
     "unRAID notify script" || warn "unRAID notify script not found — native notifications disabled"
 
+if ! command -v docker &>/dev/null; then
+    error "Docker command not found"
+    exit 1
+fi
+
 detect_hosts
 resolve_remote_ip
 

Orchestrators/transcode_management.sh

@@ -72,6 +72,11 @@ fi
 
 acquire_lock "wait"
 
+if ! command -v docker &>/dev/null; then
+    error "Docker command not found"
+    exit 1
+fi
+
 # detect_hosts() sets MY_ID and aliases all HOST*_TRANSCODE_* vars
 detect_hosts
 

Orchestrators/weekly_sync_maintenance.sh

@@ -83,6 +83,11 @@ validate_unraid_cmd \
 
 acquire_lock
 
+if ! command -v docker &>/dev/null; then
+    error "Docker command not found"
+    exit 1
+fi
+
 detect_hosts
 resolve_remote_ip
 

Partnership/partnership_manager.sh

@@ -237,6 +237,11 @@ validate_unraid_cmd \
     "" "" \
     "unRAID notify script" || warn "unRAID notify script not found — native notifications disabled"
 
+if ! command -v docker &>/dev/null; then
+    error "Docker command not found"
+    exit 1
+fi
+
 # detect_hosts() sets MY_ID and aliases PARTNERSHIP_AUTH_WEBUIS, PARTNERSHIP_MIRROR_BACKUPS
 detect_hosts
 

Partnership/partnership_offboard.sh

@@ -97,6 +97,11 @@ PARTNERSHIP_LIB_MODE=1 source "$SCRIPT_DIR/partnership_manager.sh"
 # ==============================================================================================
 [[ "$EUID" -ne 0 ]] && { error "Must be run as root"; exit 1; }
 
+if ! command -v docker &>/dev/null; then
+    error "Docker command not found"
+    exit 1
+fi
+
 detect_hosts
 
 OWNER_ID="${PARTNERSHIP_OWNER_HOST:-HOST1}"

Partnership/partnership_onboard.sh

@@ -158,6 +158,11 @@ parse_args "${FILTERED_ARGS[@]}"
 
 acquire_lock
 
+if ! command -v docker &>/dev/null; then
+    error "Docker command not found"
+    exit 1
+fi
+
 detect_hosts
 
 OWNER_ID="${PARTNERSHIP_OWNER_HOST:-HOST1}"

Rsync/rsync.sh

@@ -165,6 +165,11 @@ fi
 
 acquire_lock
 
+if ! command -v docker &>/dev/null; then
+    error "Docker command not found"
+    exit 1
+fi
+
 validate_unraid_cmd \
     "/usr/local/emhttp/plugins/dynamix/scripts/notify" \
     "" "" \

Tools/container_data_export.sh

@@ -88,6 +88,11 @@ fi
 
 acquire_lock
 
+if ! command -v docker &>/dev/null; then
+    error "Docker command not found"
+    exit 1
+fi
+
 validate_unraid_cmd \
     "/usr/local/emhttp/plugins/dynamix/scripts/notify" \
     "" "" \

Tools/emby_database_repair.sh

@@ -113,6 +113,11 @@ fi
 
 acquire_lock
 
+if ! command -v docker &>/dev/null; then
+    error "Docker command not found"
+    exit 1
+fi
+
 # detect_hosts() sets MY_ID and aliases HOST*_EMBY_CONTAINER → EMBY_CONTAINER
 detect_hosts
 

Tools/watchdog_skip_list_manager.sh

@@ -116,6 +116,11 @@ validate_unraid_cmd \
 
 acquire_lock
 
+if ! command -v docker &>/dev/null; then
+    error "Docker command not found"
+    exit 1
+fi
+
 # detect_hosts() sets MY_ID — used in output
 detect_hosts
 

Transcodes/transcode_manager.sh

@@ -157,6 +157,11 @@ validate_unraid_cmd \
 
 acquire_lock "wait"
 
+if ! command -v docker &>/dev/null; then
+    error "Docker command not found"
+    exit 1
+fi
+
 # detect_hosts() sets MY_ID and aliases all HOST*_TRANSCODE_* vars
 detect_hosts
 

git_pull_execute.sh

@@ -64,6 +64,11 @@ if [[ "$EUID" -ne 0 ]]; then
 fi
 acquire_lock
 
+if ! command -v docker &>/dev/null; then
+    error "Docker command not found"
+    exit 1
+fi
+
 # detect_hosts() sets MY_ID — needed for sparse checkout configuration
 detect_hosts
 

unRAID_Essentials/clear_logs.sh

@@ -100,6 +100,11 @@ validate_unraid_cmd \
 
 acquire_lock
 
+if ! command -v docker &>/dev/null; then
+    error "Docker command not found"
+    exit 1
+fi
+
 detect_hosts
 
 [[ "$DRY_RUN" == true ]] && warn "DRY RUN — no files will be cleared"

unRAID_Essentials/inotify_tuning.sh

@@ -106,6 +106,11 @@ validate_unraid_cmd \
 
 acquire_lock
 
+if ! command -v docker &>/dev/null; then
+    error "Docker command not found"
+    exit 1
+fi
+
 detect_hosts
 
 [[ "$DRY_RUN" == true ]] && warn "DRY RUN — no changes will be made"

unRAID_Essentials/resource_watchdog.sh

@@ -124,6 +124,11 @@ fi
 
 acquire_lock
 
+if ! command -v docker &>/dev/null; then
+    error "Docker command not found"
+    exit 1
+fi
+
 detect_hosts
 
 DOCKER_TIMEOUT=15

unRAID_Essentials/rsync_stop.sh

@@ -121,6 +121,11 @@ validate_unraid_cmd \
 
 acquire_lock
 
+if ! command -v docker &>/dev/null; then
+    error "Docker command not found"
+    exit 1
+fi
+
 detect_hosts
 
 # Soft IP resolution — rsync_stop continues local-only if remote unreachable