custom_html for serving whatever html you like (#259)

fixes:
sdr-enthusiasts/docker-adsb-ultrafeeder#177

README.md

@@ -303,6 +303,10 @@ docker exec -it ultrafeeder bash /tar1090-install.sh /run/readsb webroot /usr/lo
 
 After this has finished a simple reload in the browser should do the trick.
 
+Another option is to bind / mount a folder to /var/custom_html in the container and set
+CUSTOM_HTML=true, be aware no cache busting will be done, nor will any of the tar1090 configuration
+settings be applied. The folder will be served as is with aircraft data available as usual at /data.
+
 #### `tar1090` `config.js` Configuration - Title
 
 | Environment Variable         | Purpose                                              | Default   |

rootfs/etc/s6-overlay/scripts/tar1090-update

@@ -7,17 +7,6 @@ if ! chk_enabled "${UPDATE_TAR1090}" || chk_enabled "${TAR1090_DISABLE}"; then
     stop_service
 fi
 
-OVERRIDE_GIT_SOURCE="/var/tar1090_git_source"
-
-if [[ -d "${OVERRIDE_GIT_SOURCE}/html" ]]; then
-    "${s6wrap[@]}" echo "USING LOCALLY MODIFIED TAR1090 from ${OVERRIDE_GIT_SOURCE}"
-    "${s6wrap[@]}" bash /tar1090-install.sh /run/readsb webroot "${TAR1090_INSTALL_DIR}" "${OVERRIDE_GIT_SOURCE}"
-    TAR1090_VERSION="$(cat "${OVERRIDE_GIT_SOURCE}/version") LOCALLY MODIFIED"
-else
-    "${s6wrap[@]}" bash /tar1090-install.sh /run/readsb webroot "${TAR1090_INSTALL_DIR}"
-    TAR1090_VERSION=$(cat "${TAR1090_UPDATE_DIR}/git/version")
-fi
-
 # aircraft-db
 if chk_enabled "$TAR1090_ENABLE_AC_DB" && curl --connect-timeout 10 --silent --show-error "https://raw.githubusercontent.com/wiedehopf/tar1090-db/csv/version" > "/run/aircraft.csv.gz.version.new"; then
     if ! diff -q "${TAR1090_UPDATE_DIR}/aircraft.csv.gz.version" "/run/aircraft.csv.gz.version.new" &>/dev/null; then
@@ -30,15 +19,28 @@ if chk_enabled "$TAR1090_ENABLE_AC_DB" && curl --connect-timeout 10 --silent --s
     fi
 fi
 
-# Print tar1090 version
-TAR1090_DB_VERSION=$(cat "${TAR1090_UPDATE_DIR}/git-db/version")
-"${s6wrap[@]}" echo "tar1090 version: ${TAR1090_VERSION} tar1090-db version: ${TAR1090_DB_VERSION}"
-export TAR1090_VERSION
+if ! chk_enabled "${CUSTOM_HTML}"; then
+    OVERRIDE_GIT_SOURCE="/var/tar1090_git_source"
+
+    if [[ -d "${OVERRIDE_GIT_SOURCE}/html" ]]; then
+        "${s6wrap[@]}" echo "USING LOCALLY MODIFIED TAR1090 from ${OVERRIDE_GIT_SOURCE}"
+        "${s6wrap[@]}" bash /tar1090-install.sh /run/readsb webroot "${TAR1090_INSTALL_DIR}" "${OVERRIDE_GIT_SOURCE}"
+        TAR1090_VERSION="$(cat "${OVERRIDE_GIT_SOURCE}/version") LOCALLY MODIFIED"
+    else
+        "${s6wrap[@]}" bash /tar1090-install.sh /run/readsb webroot "${TAR1090_INSTALL_DIR}"
+        TAR1090_VERSION=$(cat "${TAR1090_UPDATE_DIR}/git/version")
+    fi
+
+    # Print tar1090 version
+    TAR1090_DB_VERSION=$(cat "${TAR1090_UPDATE_DIR}/git-db/version")
+    "${s6wrap[@]}" echo "tar1090 version: ${TAR1090_VERSION} tar1090-db version: ${TAR1090_DB_VERSION}"
+    export TAR1090_VERSION
 
-# call the necessary scripts to configure the newly created tar1090 html folder
-# they were already run on container startup but there is no harm in running them again
-"${s6wrap[@]}" bash /etc/s6-overlay/startup.d/04-tar1090-configure
-"${s6wrap[@]}" bash /etc/s6-overlay/startup.d/06-range-outline
+    # call the necessary scripts to configure the newly created tar1090 html folder
+    # they were already run on container startup but there is no harm in running them again
+    "${s6wrap[@]}" bash /etc/s6-overlay/startup.d/04-tar1090-configure
+    "${s6wrap[@]}" bash /etc/s6-overlay/startup.d/06-range-outline
+fi
 
 if (( UPDATE_TAR1090_DAYS == 0 )); then
     stop_service

rootfs/etc/s6-overlay/startup.d/07-nginx-configure

@@ -45,3 +45,7 @@ sed -i -e 's|#sed_placeholder_API_proxy|location /re-api/ {\
 else
     cp -Tf /etc/nginx.tar1090/sites-enabled/tar1090 /etc/nginx/sites-enabled/tar1090
 fi
+
+if chk_enabled "${CUSTOM_HTML}"; then
+    sed -i -e 's#/usr/local/share/tar1090/html-webroot/#/var/custom_html/#' /etc/nginx/nginx-tar1090-webroot.conf
+fi