Added Postgres 11

Author: f3l1x

11/Dockerfile

@@ -0,0 +1,11 @@
+FROM postgres:11
+
+ENV LANG cs_CZ.utf8
+
+COPY ./ext/unaccent/czech_unaccent.tar.gz /tmp
+COPY ./init-scripts/* /docker-entrypoint-initdb.d/
+
+RUN localedef -i cs_CZ -c -f UTF-8 -A /usr/share/locale/locale.alias cs_CZ.UTF-8 && \
+    cd /tmp && tar xvzf czech_unaccent.tar.gz && \
+    cp fulltext_dicts/* /usr/share/postgresql/11/tsearch_data && \
+    rm -rf /tmp/*

11/ext/unaccent/czech_unaccent.tar.gz

@@ -0,0 +1,6 @@
+CREATE TEXT SEARCH DICTIONARY cspell
+   (template=ispell, dictfile = czech_unaccent, afffile=czech_unaccent, stopwords=czech_unaccent);
+CREATE TEXT SEARCH CONFIGURATION cs (copy=english);
+ALTER TEXT SEARCH CONFIGURATION cs
+ALTER MAPPING FOR word, asciiword WITH cspell, simple;
+CREATE EXTENSION unaccent;

11/init-scripts/init-czech-dict.sql

@@ -1,6 +1,6 @@
 # Postgres
 
-Tuned PostgreSQL 10 docker image.
+Tuned PostgreSQL 10/11 docker image.
 
 - configured unaccent for Czech language
 
@@ -15,12 +15,13 @@ Tuned PostgreSQL 10 docker image.
 
 ## Versions
 
-- PostgreSQL 10
+- PostgreSQL 10/11
 
 ## Usage
 
 ```sh
 docker run --rm -it -p 5432:5432 dockette/postgres:10
+docker run --rm -it -p 5432:5432 dockette/postgres:11
 ```
 
 ## Test