错误：在dockerfile

Question

我试图将postgis安装到postgres容器中。 Dockerfile：

FROM postgres:9.6.4-alpine

RUN apk update \
    && apk add -u postgresql-9.6-postgis-2.4 postgresql-9.6-postgis-2.4-scripts \
    && rm -rf /var/lib/apt/lists/*

COPY ./scripts/postgis.sh  /docker-entrypoint-initdb.d/postgis.sh

postgis.sh：

#!/bin/sh

for DB in $(psql -t -c  "SELECT datname from pg_database where datname = 'backend'"); do
    echo "Loading PostGIS extensions into $DB"
    "${psql[@]}" --dbname="$DB" <<-'EOSQL'
        CREATE EXTENSION IF NOT EXISTS postgis;
EOSQL
done

我收到了这个错误：

  

错误：不满意的约束：     postgresql-9.6-postgis-2.4（缺失）：       要求：                    世界[PostgreSQL的-9.6的PostGIS-2.4]     postgresql-9.6-postgis-2.4-scripts（缺失）：       要求：                    世界[PostgreSQL的-9.6的PostGIS-2.4-脚本]   命令＆＃39; / bin / sh -c apk更新＆amp;＆amp; apk add -u postgresql-9.6-postgis-2.4 postgresql-9.6-postgis-2.4-scripts＆amp;＆amp; rm -rf / var / lib / apt / lists / *＆＃39;返回非零代码：2

我发现了类似的问题，例如：

1. ERROR: unsatisfiable constraints: while installing package in alpine
2. ERROR: unsatisfiable constraints - on php:7-fpm-alpine

但它并没有解决我的问题。如何用apk添加postgis扩展到我的postgres容器？

Answer 1

Postgis包只适用于边缘高山回购，而不是稳定的回购。这就是为什么你得到了不可满足的约束＆＃34;错误。

但是无论如何你可以从边缘仓库安装postgis：

# echo "http://dl-cdn.alpinelinux.org/alpine/edge/testing" >> /etc/apk/repositories

# apk update
fetch http://dl-cdn.alpinelinux.org/alpine/v3.5/main/x86_64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/v3.5/community/x86_64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/edge/testing/x86_64/APKINDEX.tar.gz
WARNING: This apk-tools is OLD! Some packages might not function properly.
v3.5.2-254-g9d4623dc57 [http://dl-cdn.alpinelinux.org/alpine/v3.5/main]
v3.5.2-247-gc85efb30e1 [http://dl-cdn.alpinelinux.org/alpine/v3.5/community]
v3.7.0-2163-ge03552fc58 [http://dl-cdn.alpinelinux.org/alpine/edge/testing]
OK: 10930 distinct packages available

# apk search --no-cache postgis
fetch http://dl-cdn.alpinelinux.org/alpine/v3.5/main/x86_64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/v3.5/community/x86_64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/edge/testing/x86_64/APKINDEX.tar.gz
WARNING: This apk-tools is OLD! Some packages might not function properly.
postgis-dev-2.4.1-r1
postgis-2.4.1-r1
postgis-doc-2.4.1-r1

所以，最后的Dockerfile是：

FROM postgres:9.6.4-alpine

RUN echo "http://dl-cdn.alpinelinux.org/alpine/edge/testing" >> /etc/apk/repositories

RUN apk update \
    && apk add -u postgis \
    && rm -rf /var/lib/apt/lists/*

COPY ./scripts/postgis.sh  /docker-entrypoint-initdb.d/postgis.sh

Answer 2

旧：

apk add --no-cache curl jq python py-pip

新功能：

apk add --no-cache curl jq python3 py3-pip

Answer 3

这很奇怪，但就我而言，解决方案就像运行一样简单：

delete

... 在运行 docker 容器的机器上