[enh] tidy: clean old morty, filtron, searx references

Everyone should have already switched from legacy methods

container/docker-entrypoint.sh

@@ -12,8 +12,7 @@ Environment variables:
   INSTANCE_NAME settings.yml : general.instance_name
   AUTOCOMPLETE  settings.yml : search.autocomplete
   BASE_URL      settings.yml : server.base_url
-  MORTY_URL     settings.yml : result_proxy.url
-  MORTY_KEY     settings.yml : result_proxy.key
+
 Volume:
   /etc/searxng  the docker entry point copies settings.yml and uwsgi.ini in
                 this directory (see the -f command line option)"
@@ -70,20 +69,6 @@ patch_searxng_settings() {
         -e "s/autocomplete: \"\"/autocomplete: \"${AUTOCOMPLETE}\"/g" \
         -e "s/ultrasecretkey/$(head -c 24 /dev/urandom | base64 | tr -dc 'a-zA-Z0-9')/g" \
         "${CONF}"
-
-    # Morty configuration
-
-    if [ -n "${MORTY_KEY}" ] && [ -n "${MORTY_URL}" ]; then
-        sed -i -e "s/image_proxy: false/image_proxy: true/g" \
-            "${CONF}"
-        cat >> "${CONF}" <<-EOF
-
-# Morty configuration
-result_proxy:
-   url: ${MORTY_URL}
-   key: !!binary "${MORTY_KEY}"
-EOF
-    fi
 }
 
 update_conf() {
@@ -122,30 +107,6 @@ update_conf() {
     fi
 }
 
-# searx compatibility: copy /etc/searx/* to /etc/searxng/*
-SEARX_CONF=0
-if [ -f "/etc/searx/settings.yml" ]; then
-    if  [ ! -f "${SEARXNG_SETTINGS_PATH}" ]; then
-        printf '⚠️  /etc/searx/settings.yml is copied to /etc/searxng\n'
-        cp "/etc/searx/settings.yml" "${SEARXNG_SETTINGS_PATH}"
-    fi
-    SEARX_CONF=1
-fi
-if [ -f "/etc/searx/uwsgi.ini" ]; then
-    printf '⚠️  /etc/searx/uwsgi.ini is ignored. Use the volume /etc/searxng\n'
-    SEARX_CONF=1
-fi
-if [ "$SEARX_CONF" -eq "1" ]; then
-    printf '⚠️  The deprecated volume /etc/searx is mounted. Please update your configuration to use /etc/searxng ⚠️\n'
-    cat << EOF > /etc/searx/deprecated_volume_read_me.txt
-This Docker image uses the volume /etc/searxng
-Update your configuration:
-* remove uwsgi.ini (or very carefully update your existing uwsgi.ini using https://github.com/searxng/searxng/blob/master/container/uwsgi.ini )
-* mount /etc/searxng instead of /etc/searx
-EOF
-fi
-# end of searx compatibility
-
 # make sure there are uwsgi settings
 update_conf "${FORCE_CONF_UPDATE}" "${UWSGI_SETTINGS_PATH}" "/usr/local/searxng/container/uwsgi.ini" "patch_uwsgi_settings"
 
@@ -158,8 +119,6 @@ if [ $DRY_RUN -eq 1 ]; then
     exit
 fi
 
-unset MORTY_KEY
-
 printf 'Listen on %s\n' "${BIND_ADDRESS}"
 
 # Start uwsgi