added recipe for downloading pbf,clip and mapping file from a given github repository

docker-compose.yml

@@ -8,11 +8,12 @@ volumes:
   pg:
   grafana:
   pw2:
+  osm_settings:
 
 services:
   db:
     # About the postgresql version, it should match in the dockerfile of docker-imposm3
-    image: kartoza/postgis:11.0-2.5
+    image: kartoza/postgis:12.0
     hostname: db
     container_name: dockerosm_db
     environment:
@@ -30,19 +31,36 @@ services:
     healthcheck:
         test: "exit 0"
 
+  osm_downloader:
+    image: kartoza/docker-osm:pbf-downloader
+    build: docker-osm-pbf
+    container_name: dockerosm_pbf_download
+    volumes:
+      # These are sharable to other containers
+      - settings:/home/settings
+    environment:
+      # Read the README in docker-osm-pbf
+      - CONTINENT=africa
+      - COUNTRY=lesotho
+      - BASE_URL='http://download.geofabrik.de'
+      - MAPPING_URL='https://raw.githubusercontent.com/kartoza/docker-osm/develop/settings'
+      - GEOJSON_URL=''
+
   imposm:
     image: kartoza/docker-osm:imposm-latest
     build: docker-imposm3
     container_name: dockerosm_imposm
     volumes:
       # These are sharable to other containers
-      - ./settings:/home/settings
+      - osm_settings:/home/settings
       - import_done:/home/import_done
       - import_queue:/home/import_queue
       - cache:/home/cache
     depends_on:
         db:
           condition: service_healthy
+        osm_downloader:
+          condition: service_started
     environment:
       - POSTGRES_USER=docker
       - POSTGRES_PASS=docker
@@ -81,13 +99,15 @@ services:
     container_name: dockerosm_osmupdate
     volumes:
       # These are sharable to other containers
-      - ./settings:/home/settings
+      - osm_settings:/home/settings
       - import_done:/home/import_done
       - import_queue:/home/import_queue
       - cache:/home/cache
     depends_on:
       db:
         condition: service_healthy
+      osm_downloader:
+        condition: service_started
     environment:
       # These are all currently the defaults but listed here for your
       # convenience if you want to change them

docker-osm-pbf/Dockerfile

@@ -0,0 +1,14 @@
+FROM alpine:latest
+
+RUN apk --no-cache add --update bash
+
+ENV BASE_URL='http://download.geofabrik.de'
+ENV CONTINENT=''
+ENV COUNTRY=''
+ENV MAPPING_URL='https://raw.githubusercontent.com/kartoza/docker-osm/develop/settings'
+ENV GEOJSON_URL=''
+
+RUN mkdir /home/settings
+ADD download.sh /download.sh
+
+ENTRYPOINT ["/bin/bash", "/download.sh"]

docker-osm-pbf/README.md

@@ -0,0 +1,31 @@
+# Download Docker OSM Files
+
+This image is used to facilitate downloading of docker-osm files which are required to get the image 
+running. The image will download OSM PBF file, Mapping file, Clip Geojson and QGIS Style file.
+
+Environment variables
+
+
+**BASE_URL='http://download.geofabrik.de'** 
+
+This is used to download the OSM PBF file. Currently points to Geofabrik
+
+**CONTINENT=''**
+
+Used to specify what continent you need to download pbf from. This is mandatory eg `CONTINENT=africa`
+
+**COUNTRY=''** 
+
+Used to specify which country you need to download pbf from. This is optional if you intent
+to only use continent pbf. Eg `COUNTRY=lesotho`
+
+**MAPPING_URL='https://raw.githubusercontent.com/kartoza/docker-osm/develop/settings'**
+  
+This currently points to the docker-osm repository to enable downloading of the mapping file, qgis_style
+ file. These files are mandatory in the running of docker-osm
+
+**GEOJSON_URL=''** 
+
+This points to the geojson file that is used for clipping data in OSM. This can be empty if you do 
+not intent to use the clip functionality in docker-osm
+

docker-osm-pbf/download.sh

@@ -0,0 +1,35 @@
+#!/usr/bin/env bash
+
+CONTINENT_LOCKFILE=/home/settings/.${CONTINENT}_lock
+COUNTRY_LOCKFILE=/home/settings/.${COUNTRY}_lock
+
+# Download OSM Mapping file and Associated data
+if [ ! -f /home/settings/mapping.yml ]; then \
+  wget -c ${MAPPING_URL}/mapping.yml -O /home/settings/mapping.yml
+fi
+
+if [ ! -f /home/settings/qgis_style.sql ]; then \
+  wget -c ${MAPPING_URL}/qgis_style.sql -O /home/settings/qgis_style.sql
+fi
+
+if [[ ! -f /home/settings/clip.geojson && -z ${GEOJSON_URL} ]]; then \
+  echo "We are not downloading any Geojson"
+else
+  wget -c ${GEOJSON_URL} -O /home/settings/clip.geojson
+fi
+
+# Download OSM PBF
+if [[ ! -f ${CONTINENT_LOCKFILE} && -z ${COUNTRY} ]]; then \
+
+  echo "${BASE_URL}/${CONTINENT}-latest.osm.pbf"
+  wget  -c --no-check-certificate ${BASE_URL}/${CONTINENT}-latest.osm.pbf -O /home/settings/country.pbf
+  touch ${CONTINENT_LOCKFILE}
+
+
+elif [[ ! -f ${COUNTRY_LOCKFILE} ]]; then
+
+  echo "${BASE_URL}/${CONTINENT}/${COUNTRY}-latest.osm.pbf"
+  wget  -c --no-check-certificate ${BASE_URL}/${CONTINENT}/${COUNTRY}-latest.osm.pbf -O /home/settings/country.pbf
+  touch ${COUNTRY_LOCKFILE}
+fi
+