Dockerfile example

[ssipos90]

Hi,

I wanted to drop a Dockerfile, maybe someone will find it useful.
This container needs OSM_CHANGES_URL to work and a planet dump either in dumps volume as /dumps/latest.pbf or specified as an env var.

build/osmimposm/Dockerfile:

FROM debian:buster-slim
ARG IMPOSM_VERSION=v0.11.1/imposm-0.11.1-linux-x86-64.tar.gz

RUN set -eu; \
    useradd -M -u 999 -r imposm; \
    mkdir -p /data /opt/imposm; \
    chown -R imposm:imposm /data /opt/imposm; \
    apt-get update; \
    apt-get install -y --no-install-recommends \
      ca-certificates \
      curl \
      gettext; \
    curl -sL https://github.com/omniscale/imposm3/releases/download/$IMPOSM_VERSION \
    | tar -xz -C /usr/local/bin --strip-components=1; \
    chmod +x /usr/local/bin/imposm; \
    apt-get clean; \
    rm -rf /var/lib/apt/lists/*; 

COPY import-pbf entrypoint /usr/local/bin/
COPY *.json* /opt/imposm/

VOLUME /data
VOLUME /expiry
VOLUME /dumps
WORKDIR /data
USER imposm
ENTRYPOINT ["/usr/local/bin/entrypoint"]
CMD ["run"]

build/osmimposm/entrypoint (chmod +x)

#!/bin/sh
set -eu

envsubst < /opt/imposm/config.json.template > /opt/imposm/config.json

export DEFAULT_ARGS="-config /opt/imposm/config.json -connection $DATABASE_URL"

case "$1" in
  import) import-pbf;;
  run)
    find /expiry -type f -mtime +3 -delete
    find /expiry -mindepth 1 -type d -mtime +7 -empty -delete
    exec imposm run $DEFAULT_ARGS
  ;;
  *) exec "$@";;
esac

build/osmimposm/config.json.template

{
  "replication_url": "$OSM_CHANGES_URL",
  "diffdir": "/data/diff",
  "cachedir": "/data/cache",
  "mapping": "/opt/imposm/mapping.json",
  "expiretiles_dir": "/expiry",
  "expiretiles_zoom": 14
}

build/osmimposm/import-pbf (chmod +x)

#!/bin/sh

set -eu

rm -rf /data/diff/* /data/cache/*

PBF_PATH=${PBF_PATH:-/dumps/latest.pbf}

imposm import $DEFAULT_ARGS \
                   -read "${PBF_PATH}" \
                   -diff \
                   -overwritecache \
                   -write

echo "deploying in production"
imposm import $DEFAULT_ARGS -deployproduction

docker-compose.yml

services:
  postgres:
    image: postgis/postgis
    ...
  osmimposm:
    build: build/osmimposm
    environment:
      - OSM_CHANGES_URL=https://planet.openstreetmap.org/replication/minute
      - DATABASE_URL=postgis://user:password@postgres/yourdbname
    volumes:
      - osmimposm:/data
      - osmtilesexpiry:/expiry
      - osmpbfdumps:/dumps:ro

volumes:
  osmimposm:
  osmpbfdumps:
  osmtilesexpiry:

You need to have a mapping.json in the build context.

Edits:
Add missing volume, typos
Add missing config.json.template
Add docker-compose.yml

[trytuna]

Would be nice if there is an official docker image that can be used on different processor architectures (x86, x64 and arm64). What is your opinion about this?

[ssipos90]

Would be nice if there is an official docker image that can be used on different processor architectures (x86, x64 and arm64). What is your opinion about this?

You'd probably need a build stage.