Introduce internal PIHOLE_TAG variable so that we can see what tag the container is...

Signed-off-by: Adam Warner <me@adamwarner.co.uk>

Dockerfile

@@ -46,6 +46,9 @@ ARG PIHOLE_VERSION
 ENV VERSION "${PIHOLE_VERSION}"
 ENV PATH /opt/pihole:${PATH}
 
+ARG PIHOLE_TAG
+ENV PIHOLE_TAG "${PIHOLE_TAG}"
+
 ARG NAME
 LABEL image="${NAME}:${PIHOLE_VERSION}_${PIHOLE_ARCH}"
 ARG MAINTAINER

Dockerfile.py

@@ -71,6 +71,7 @@ def build(docker_repo: str, arch: str, debian_version: str, hub_tag: str, show_t
     build_env = os.environ.copy()
     build_env['PIHOLE_VERSION'] = FTL_VERSION
     build_env['DEBIAN_VERSION'] = debian_version
+    build_env['PIHOLE_TAG'] = hub_tag
     build_command = f'{time_arg} docker-compose -f build.yml build {cache_arg} --pull {arch}'
     print(f' ::: Building {arch} into {create_tag}')
     success = run_and_stream_command_output(build_command, build_env, verbose)

build.yml

@@ -3,6 +3,7 @@ version: "3.7"
 
 x-common-args: &common-args
   PIHOLE_VERSION: ${PIHOLE_VERSION}
+  PIHOLE_TAG: ${PIHOLE_TAG}
   NAME: pihole/pihole
   MAINTAINER: adam@diginc.us
   S6_VERSION: v2.1.0.2

install.sh

@@ -89,7 +89,7 @@ sed -i $'s/)\s*reconfigurePiholeFunc/) unsupportedFunc/g' /usr/local/bin/pihole
 sed -i $'s/)\s*uninstallFunc/) unsupportedFunc/g' /usr/local/bin/pihole
 
 # Inject a message into the debug scripts Operating System section to indicate that the debug log comes from a Docker system.
-sed -i $'s/echo_current_diagnostic "Operating system"/echo_current_diagnostic "Operating system"\\\n    log_write "${INFO} Official Pi-hole Docker Container"/g' /opt/pihole/piholeDebug.sh
+sed -i $'s/echo_current_diagnostic "Operating system"/echo_current_diagnostic "Operating system"\\\n    log_write "${INFO} Pi-hole Docker Container: ${PIHOLE_TAG:-PIHOLE_TAG is unset}"/g' /opt/pihole/piholeDebug.sh
 
 touch /.piholeFirstBoot
 

s6/debian-root/etc/cont-init.d/20-start.sh

@@ -35,3 +35,5 @@ else
 fi
 
 pihole -v
+
+echo "  Container tag is: ${PIHOLE_TAG}"