added logerrors extension for extended image

Author: DmitryNFomin

README.md

@@ -14,6 +14,7 @@ Available PostgreSQL versions: 9.6, 10, 11, 12, 13. Extensions:
 - [bg_mon](https://github.com/CyberDem0n/bg_mon)
 - [Citus](https://github.com/citusdata/citus)
 - [HypoPG](https://github.com/HypoPG/hypopg)
+- [logerrors](https://github.com/munakoiso/logerrors)
 - [pg_auth_mon](https://github.com/RafiaSabih/pg_auth_mon)
 - [pg_cron](https://github.com/citusdata/pg_cron)
 - [pg_hint_plan](https://pghintplan.osdn.jp/pg_hint_plan.html)
@@ -75,6 +76,7 @@ The PostgreSQL 13 image is now missing the following extensions (they will be ad
 | intarray           | 1.2             | functions, operators, and index support for 1-D arrays of integers |
 | isn                | 1.2             | data types for international product numbering standards |
 | lo                 | 1.1             | Large Object maintenance |
+| logerrors          | 1.1             | Function for collecting statistics about messages in logfile
 | ltree              | 1.1             | data type for hierarchical tree-like structures |
 | moddatetime        | 1.0             | functions for tracking last modification time |
 | pageinspect        | 1.7             | inspect the contents of database pages at a low level |

extended/Dockerfile

@@ -84,7 +84,13 @@ RUN apt-get clean && rm -rf /var/lib/apt/lists/partial \
    # set_user extension
    && git clone https://github.com/pgaudit/set_user.git \
      && cd set_user && make USE_PGXS=1 && make USE_PGXS=1 install \
-    # WAL-G
+  # errorlogs extension
+  && if [ $(echo "$PG_SERVER_VERSION > 9.6" | /usr/bin/bc) = "1" ]; then \
+    cd /tmp && wget https://github.com/munakoiso/logerrors/archive/v1.1.tar.gz \
+    && tar -xf v1.1.tar.gz && rm v1.1.tar.gz && cd logerrors-1.1 \
+    && USE_PGXS=1 make && USE_PGXS=1 make install; \
+  fi \
+ # WAL-G
    && wget --quiet -O /tmp/wal-g.linux-amd64.tar.gz "https://github.com/wal-g/wal-g/releases/download/v${WALG_VERSION}/wal-g.linux-amd64.tar.gz" \
    && tar -zxvf /tmp/wal-g.linux-amd64.tar.gz && mv wal-g /usr/local/bin/ \
    # remove all auxilary packages to reduce final image size