Test shebangs

.templates/ha_entrypoint.sh

@@ -27,18 +27,36 @@ run_script() {
         sed -i -E 's|s6-setuidgid[[:space:]]+([a-zA-Z0-9._-]+)[[:space:]]+(.*)$|su -s /bin/bash \1 -c "\2"|g' "$runfile"
     fi
 
-    # Get current shebang, if not available use another
-    currentshebang="$(sed -n '1{s/^#![[:blank:]]*//p;q}' "$SCRIPTS")"
-    if [ ! -f "${currentshebang%% *}" ]; then
-        for shebang in "/usr/bin/env bashio" "/usr/bin/with-contenv bashio" "/command/with-contenv bashio" "/usr/bin/bashio" "/usr/bin/bash" "/usr/bin/sh" "/bin/bash" "/bin/sh"; do
-            command_path="${shebang%% *}"
-            if [ -x "$command_path" ] && "$command_path" echo "yes" > /dev/null 2>&1; then
-                echo "Valid shebang: $shebang"
+    # Prepare candidate shebangs: contenv first if PID1
+    candidate_shebangs=()
+    if $PID1; then
+        candidate_shebangs+=("/command/with-contenv bashio" "/usr/bin/with-contenv bashio")
+    fi
+    candidate_shebangs+=(
+        "/usr/bin/env bashio"
+        "/usr/bin/bashio"
+        "/usr/bin/bash"
+        "/usr/bin/sh"
+        "/bin/bash"
+        "/bin/sh"
+    )
+
+    for shebang in "${candidate_shebangs[@]}"; do
+        command_path="${shebang%% *}"
+        if [ -x "$command_path" ]; then
+            tmpfile="$(mktemp)"
+            echo "#!$shebang" > "$tmpfile"
+            echo "bashio::addon.version" >> "$tmpfile"
+            chmod +x "$tmpfile"
+            output="$("$tmpfile" 2>/dev/null)"
+            rm -f "$tmpfile"
+            if [[ -n "$output" ]]; then
+                echo "Valid shebang: $shebang (output: $output)"
+                sed -i "1s|^#![^\n]*|#!$shebang|" "$SCRIPTS"
                 break
             fi
-        done
-        sed -i "s|$currentshebang|$shebang|g" "$SCRIPTS"
-    fi
+        fi
+    done
 
     # Use source to share env variables when requested
     if [[ "$script_kind" == service ]]; then
@@ -62,11 +80,18 @@ run_script() {
 }
 
 # Loop through /etc/cont-init.d/*
+[[ -d /etc/cont-init.d ]] && \
 for SCRIPTS in /etc/cont-init.d/*; do
     [ -e "$SCRIPTS" ] || continue
     run_script "$SCRIPTS" script
 done
 
+[[ -d /etc/s6-overlay/s6-rc.d ]] && \
+for SCRIPTS in /etc/s6-overlay/s6-rc.d/*/run; do
+    [ -e "$SCRIPTS" ] || continue
+    run_script "$SCRIPTS" script
+done || true
+
 # Start services.d
 if [ "$$" -eq 1 ]; then
     for service_dir in /etc/services.d/*; do