feat: default postgres user (exivity#6)

* feat: postgres conf

* chore: warning

Author: hongaar

README.md

@@ -11,6 +11,11 @@ A dev image with common tools pre-installed.
 ## OSS
 
 The images below support Windows and Linux hosts and have built-in healthchecks.
+
+> ⚠ **WARNING**  
+> These images are meant as dev containers and have insecure defaults. Do not
+> use in production.
+
 | Image | Docker Hub | README | Latest version |
 |-------|------------|--------|----------------|
 | `exivity/postgres` | [Docker Hub](https://hub.docker.com/r/exivity/postgres) | [README.md](postgres/README.md) | ![Latest version](https://img.shields.io/docker/v/exivity/postgres?sort=semver) |

postgres/Dockerfile.windows

@@ -33,4 +33,14 @@ RUN mkdir "C:/pgsql/data"
 RUN mkdir "C:/pgsql/log"
 RUN pg_ctl -D "C:/pgsql/data" init
 
+COPY postgresql.conf /pgsql/data/
+COPY pg_hba.conf /pgsql/data/
+
+RUN pg_ctl -D "C:/pgsql/data" start && \
+    createdb && \
+    createuser --createdb --superuser --createrole --inherit --login postgres && \
+    psql -c "ALTER USER postgres WITH PASSWORD 'postgres'; " && \
+    dropdb ContainerUser && \
+    pg_ctl -D "C:/pgsql/data" stop
+
 CMD ["C:/pgsql/bin/postgres.exe", "-D", "C:/pgsql/data"]

postgres/README.md

@@ -10,6 +10,8 @@ docker run --rm --detach \
   --name postgres exivity/postgres:latest
 ```
 
+A user `postgres` with default password `postgres` is available.
+
 ## Development
 
 ```

postgres/pg_hba.conf

@@ -0,0 +1,93 @@
+# PostgreSQL Client Authentication Configuration File
+# ===================================================
+#
+# Refer to the "Client Authentication" section in the PostgreSQL
+# documentation for a complete description of this file.  A short
+# synopsis follows.
+#
+# This file controls: which hosts are allowed to connect, how clients
+# are authenticated, which PostgreSQL user names they can use, which
+# databases they can access.  Records take one of these forms:
+#
+# local      DATABASE  USER  METHOD  [OPTIONS]
+# host       DATABASE  USER  ADDRESS  METHOD  [OPTIONS]
+# hostssl    DATABASE  USER  ADDRESS  METHOD  [OPTIONS]
+# hostnossl  DATABASE  USER  ADDRESS  METHOD  [OPTIONS]
+#
+# (The uppercase items must be replaced by actual values.)
+#
+# The first field is the connection type: "local" is a Unix-domain
+# socket, "host" is either a plain or SSL-encrypted TCP/IP socket,
+# "hostssl" is an SSL-encrypted TCP/IP socket, and "hostnossl" is a
+# plain TCP/IP socket.
+#
+# DATABASE can be "all", "sameuser", "samerole", "replication", a
+# database name, or a comma-separated list thereof. The "all"
+# keyword does not match "replication". Access to replication
+# must be enabled in a separate record (see example below).
+#
+# USER can be "all", a user name, a group name prefixed with "+", or a
+# comma-separated list thereof.  In both the DATABASE and USER fields
+# you can also write a file name prefixed with "@" to include names
+# from a separate file.
+#
+# ADDRESS specifies the set of hosts the record matches.  It can be a
+# host name, or it is made up of an IP address and a CIDR mask that is
+# an integer (between 0 and 32 (IPv4) or 128 (IPv6) inclusive) that
+# specifies the number of significant bits in the mask.  A host name
+# that starts with a dot (.) matches a suffix of the actual host name.
+# Alternatively, you can write an IP address and netmask in separate
+# columns to specify the set of hosts.  Instead of a CIDR-address, you
+# can write "samehost" to match any of the server's own IP addresses,
+# or "samenet" to match any address in any subnet that the server is
+# directly connected to.
+#
+# METHOD can be "trust", "reject", "md5", "password", "scram-sha-256",
+# "gss", "sspi", "ident", "peer", "pam", "ldap", "radius" or "cert".
+# Note that "password" sends passwords in clear text; "md5" or
+# "scram-sha-256" are preferred since they send encrypted passwords.
+#
+# OPTIONS are a set of options for the authentication in the format
+# NAME=VALUE.  The available options depend on the different
+# authentication methods -- refer to the "Client Authentication"
+# section in the documentation for a list of which options are
+# available for which authentication methods.
+#
+# Database and user names containing spaces, commas, quotes and other
+# special characters must be quoted.  Quoting one of the keywords
+# "all", "sameuser", "samerole" or "replication" makes the name lose
+# its special character, and just match a database or username with
+# that name.
+#
+# This file is read on server startup and when the server receives a
+# SIGHUP signal.  If you edit the file on a running system, you have to
+# SIGHUP the server for the changes to take effect, run "pg_ctl reload",
+# or execute "SELECT pg_reload_conf()".
+#
+# Put your actual configuration here
+# ----------------------------------
+#
+# If you want to allow non-local connections, you need to add more
+# "host" records.  In that case you will also need to make PostgreSQL
+# listen on a non-local interface via the listen_addresses
+# configuration parameter, or via the -i or -h command line switches.
+
+# CAUTION: Configuring the system for local "trust" authentication
+# allows any local user to connect as any PostgreSQL user, including
+# the database superuser.  If you do not trust all your local users,
+# use another authentication method.
+
+
+# TYPE  DATABASE        USER            ADDRESS                 METHOD
+
+# IPv4 local connections:
+host    all             all             127.0.0.1/32            trust
+# IPv6 local connections:
+host    all             all             ::1/128                 trust
+# Allow replication connections from localhost, by a user with the
+# replication privilege.
+host    replication     all             127.0.0.1/32            trust
+host    replication     all             ::1/128                 trust
+
+# Allow postgres user
+host    all             postgres        0.0.0.0/0               md5