Fix corrupted HEALTH_URL and ASCII art in Dockerfiles caused by version updater

The addons_updater script's global sed replacement corrupted Dockerfiles
when the upstream_version was empty (""), replacing all empty double-quoted
strings with version strings. This corrupted:

- HEALTH_URL values (causing malformed health check URLs and container
  instability from failed health checks)
- ASCII art comments in Dockerfile headers

Fixed affected addons: guacamole, tdarr, photoprism, enedisgateway2mqtt_dev,
gazpar2mqtt, seafile

Also added a guard in the updater script to skip updates when version
strings are empty, preventing this corruption from recurring.

Co-authored-by: alexbelgium <44178713+alexbelgium@users.noreply.github.com>

addons_updater/rootfs/etc/cont-init.d/99-run.sh

@@ -319,6 +319,12 @@ for f in */; do
         LASTVERSION2=${LASTVERSION//+/-}
         CURRENT2=${CURRENT//+/-}
 
+        # Skip if current or last version is empty (would corrupt files by replacing all "" occurrences)
+        if [ "${CURRENT}" = '""' ] || [ "${LASTVERSION}" = '""' ]; then
+            bashio::log.warning "... $SLUG : skipping update due to empty version string (current=${CURRENT}, latest=${LASTVERSION})"
+            continue
+        fi
+
         # Update if needed
         if [ "${CURRENT2}" != "${LASTVERSION2}" ]; then
             LOGINFO="... $SLUG : update from ${CURRENT} to ${LASTVERSION}" && if [ "$VERBOSE" = true ]; then bashio::log.info "$LOGINFO"; fi

enedisgateway2mqtt_dev/Dockerfile

@@ -2,11 +2,11 @@
 #  ALEXBELGIUM'S DOCKERFILE  #
 #============================#
 #           _.------.
-#       _.-`    ('>.-`"0.8.13""-.
+#       _.-`    ('>.-`"""-.
 # '.--'`       _'`   _ .--.)
 #    -'         '-.-';`   `
 #    ' -      _.'  ``'--.
-#        '---`    .-'"0.8.13"`
+#        '---`    .-'""`
 #               /`
 #=== Home Assistant Addon ===#
 

gazpar2mqtt/Dockerfile

@@ -2,11 +2,11 @@
 #  ALEXBELGIUM'S DOCKERFILE  #
 #============================#
 #           _.------.
-#       _.-`    ('>.-`"0.8.2""-.
+#       _.-`    ('>.-`"""-.
 # '.--'`       _'`   _ .--.)
 #    -'         '-.-';`   `
 #    ' -      _.'  ``'--.
-#        '---`    .-'"0.8.2"`
+#        '---`    .-'""`
 #               /`
 #=== Home Assistant Addon ===#
 

guacamole/Dockerfile

@@ -2,11 +2,11 @@
 #  ALEXBELGIUM'S DOCKERFILE  #
 #============================#
 #           _.------.
-#       _.-`    ('>.-`"1.6.0-bullseye""-.
+#       _.-`    ('>.-`"""-.
 # '.--'`       _'`   _ .--.)
 #    -'         '-.-';`   `
 #    ' -      _.'  ``'--.
-#        '---`    .-'"1.6.0-bullseye"`
+#        '---`    .-'""`
 #               /`
 #=== Home Assistant Addon ===#
 
@@ -134,7 +134,7 @@ LABEL \
 #################
 
 ENV HEALTH_PORT="8080" \
-    HEALTH_URL="1.6.0-bullseye"
+    HEALTH_URL=""
 HEALTHCHECK \
     --interval=5s \
     --retries=5 \

photoprism/Dockerfile

@@ -2,11 +2,11 @@
 #  ALEXBELGIUM'S DOCKERFILE  #
 #============================#
 #           _.------.
-#       _.-`    ('>.-`"ubuntu-2025-11-30""-.
+#       _.-`    ('>.-`"""-.
 # '.--'`       _'`   _ .--.)
 #    -'         '-.-';`   `
 #    ' -      _.'  ``'--.
-#        '---`    .-'"ubuntu-2025-11-30"`
+#        '---`    .-'""`
 #               /`
 #=== Home Assistant Addon ===#
 
@@ -134,8 +134,8 @@ RUN \
         mv /etc/nginx/nginx.conf.new /etc/nginx/nginx.conf; \
     fi
 
-ENV HEALTH_PORT="ubuntu-2025-11-30" \
-    HEALTH_URL="ubuntu-2025-11-30"
+ENV HEALTH_PORT="2341" \
+    HEALTH_URL=""
 HEALTHCHECK \
     --interval=5m \
     --retries=5 \

seafile/Dockerfile

@@ -2,11 +2,11 @@
 #  ALEXBELGIUM'S DOCKERFILE  #
 #============================#
 #           _.------.
-#       _.-`    ('>.-`"12.0.14""-.
+#       _.-`    ('>.-`"""-.
 # '.--'`       _'`   _ .--.)
 #    -'         '-.-';`   `
 #    ' -      _.'  ``'--.
-#        '---`    .-'"12.0.14"`
+#        '---`    .-'""`
 #               /`
 #=== Home Assistant Addon ===#
 

tdarr/Dockerfile

@@ -2,11 +2,11 @@
 #  ALEXBELGIUM'S DOCKERFILE  #
 #============================#
 #           _.------.
-#       _.-`    ('>.-`"2.58.02""-.
+#       _.-`    ('>.-`"""-.
 # '.--'`       _'`   _ .--.)
 #    -'         '-.-';`   `
 #    ' -      _.'  ``'--.
-#        '---`    .-'"2.58.02"`
+#        '---`    .-'""`
 #               /`
 #=== Home Assistant Addon ===#
 
@@ -119,7 +119,7 @@ RUN \
     fi
 
 ENV HEALTH_PORT="8265" \
-    HEALTH_URL="2.58.02"
+    HEALTH_URL=""
 HEALTHCHECK \
     --interval=5s \
     --retries=5 \