ERROR: unsatisfiable constraints when installing PostGIS on the Alpine Docker image - postgresql

Question

Ok, so the task seems pretty easy! Use an Alpine image (as it is light-weight and secure) to perform some PostgreSQL DB creation/migrations. I'm using the following Dockerfile using the code here:
FROM alpine:latest
RUN apk add -U postgresql
# install PostGIS
ENV POSTGIS_VERSION 2.5.2
ENV POSTGIS_SHA256 225aeaece00a1a6a9af15526af81bef2af27f4c198de820af1367a792ee1d1a9
RUN set -ex \
\
&& apk add --no-cache --virtual .fetch-deps \
ca-certificates \
openssl \
tar \
\
&& wget -O postgis.tar.gz "https://github.com/postgis/postgis/archive/$POSTGIS_VERSION.tar.gz" \
&& echo "$POSTGIS_SHA256 *postgis.tar.gz" | sha256sum -c - \
&& mkdir -p /usr/src/postgis \
&& tar \
--extract \
--file postgis.tar.gz \
--directory /usr/src/postgis \
--strip-components 1 \
&& rm postgis.tar.gz \
\
&& apk add --no-cache --virtual .build-deps \
autoconf \
automake \
g++ \
json-c-dev \
libtool \
libxml2-dev \
make \
perl \
\
&& apk add --no-cache --virtual .build-deps-edge \
--repository http://dl-cdn.alpinelinux.org/alpine/edge/testing \
--repository http://dl-cdn.alpinelinux.org/alpine/edge/main \
gdal-dev \
geos-dev \
proj4-dev \
protobuf-c-dev \
&& cd /usr/src/postgis \
&& ./autogen.sh \
# configure options taken from:
# https://anonscm.debian.org/cgit/pkg-grass/postgis.git/tree/debian/rules?h=jessie
&& ./configure \
# --with-gui \
&& make \
&& make install \
&& apk add --no-cache --virtual .postgis-rundeps \
json-c \
&& apk add --no-cache --virtual .postgis-rundeps-edge \
--repository http://dl-cdn.alpinelinux.org/alpine/edge/testing \
--repository http://dl-cdn.alpinelinux.org/alpine/edge/main \
geos \
gdal \
proj4 \
protobuf-c \
&& cd / \
&& rm -rf /usr/src/postgis \
&& apk del .fetch-deps .build-deps .build-deps-edge
COPY ./db-creator.sh /db-creator.sh
CMD ["./db-creator.sh"]
However, the dependencies are not installed using apk due to some unsatisfiable constraints error. The error is as follows and the full logs are available in this issue I opened.
ERROR: unsatisfiable constraints:
gdal-dev (missing):
required by: .build-deps-edge-20200123.143501[gdal-dev]
geos-dev (missing):
required by: .build-deps-edge-20200123.143501[geos-dev]
proj4-dev (missing):
required by: .build-deps-edge-20200123.143501[proj4-dev]
Any help is appreciated.

Answer 1

The code on github contains another image postgres:11-alpine comparing to image defined in question: alpine:latest.
Packages gdal-dev, geos-dev, protobuf-c-dev are no longer in edge repo testing branch, they were migrated to stable v3.11 repository. Also proj4-dev was renamed to proj-dev, which is also in stable v3.11 repository.
So to fix the Dockerfile we just need to install above packages from v3.11 repo, ie change this part of code:
&& apk add --no-cache --virtual .build-deps \
autoconf \
automake \
g++ \
json-c-dev \
libtool \
libxml2-dev \
make \
perl \
\
&& apk add --no-cache --virtual .build-deps-edge \
--repository http://dl-cdn.alpinelinux.org/alpine/edge/testing \
--repository http://dl-cdn.alpinelinux.org/alpine/edge/main \
gdal-dev \
geos-dev \
proj4-dev \
protobuf-c-dev \
proj4-dev \
protobuf-c-dev \
to this one:
&& apk add --no-cache --virtual .build-deps \
autoconf \
automake \
g++ \
gdal-dev \
geos-dev \
json-c-dev \
libtool \
libxml2-dev \
make \
perl \
proj-dev \
protobuf-c-dev \
\
The final Dockerfile is:
FROM alpine:3.11
RUN apk add -U postgresql
# install PostGIS
ENV POSTGIS_VERSION 2.5.2
ENV POSTGIS_SHA256 225aeaece00a1a6a9af15526af81bef2af27f4c198de820af1367a792ee1d1a9
RUN set -ex \
\
&& apk add --no-cache --virtual .fetch-deps \
ca-certificates \
openssl \
tar \
\
&& wget -O postgis.tar.gz "https://github.com/postgis/postgis/archive/$POSTGIS_VERSION.tar.gz" \
&& echo "$POSTGIS_SHA256 *postgis.tar.gz" | sha256sum -c - \
&& mkdir -p /usr/src/postgis \
&& tar \
--extract \
--file postgis.tar.gz \
--directory /usr/src/postgis \
--strip-components 1 \
&& rm postgis.tar.gz \
\
&& apk add --no-cache --virtual .build-deps \
autoconf \
automake \
g++ \
gdal-dev \
geos-dev \
json-c-dev \
libtool \
libxml2-dev \
make \
perl \
proj-dev \
protobuf-c-dev \
\
&& cd /usr/src/postgis \
&& ./autogen.sh \
# configure options taken from:
# https://anonscm.debian.org/cgit/pkg-grass/postgis.git/tree/debian/rules?h=jessie
&& ./configure \
# --with-gui \
&& make \
&& make install \
&& apk add --no-cache --virtual .postgis-rundeps \
json-c \
&& apk add --no-cache --virtual .postgis-rundeps-edge \
--repository http://dl-cdn.alpinelinux.org/alpine/edge/testing \
--repository http://dl-cdn.alpinelinux.org/alpine/edge/main \
geos \
gdal \
proj4 \
protobuf-c \
&& cd / \
&& rm -rf /usr/src/postgis \
&& apk del .fetch-deps .build-deps .build-deps-edge
COPY ./db-creator.sh /db-creator.sh
CMD ["./db-creator.sh"]