Fix Debian "postgres" user HOME (to match Debian package)

See 997d842ee7/debian/postgresql-common.postinst (L32-35) for the bit of the upstream Debian package which sets this.

10/Dockerfile

@@ -12,7 +12,14 @@ RUN set -ex; \
 	fi
 
 # explicitly set user/group IDs
-RUN groupadd -r postgres --gid=999 && useradd -r -g postgres --uid=999 postgres
+RUN set -eux; \
+	groupadd -r postgres --gid=999; \
+# https://salsa.debian.org/postgresql/postgresql-common/blob/997d842ee744687d99a2b2d95c1083a2615c79e8/debian/postgresql-common.postinst#L32-35
+	useradd -r -g postgres --uid=999 --home-dir=/var/lib/postgresql --shell=/bin/bash postgres; \
+# also create the postgres user's home directory with appropriate permissions
+# see https://github.com/docker-library/postgres/issues/274
+	mkdir -p /var/lib/postgresql; \
+	chown -R postgres:postgres /var/lib/postgresql
 
 # grab gosu for easy step-down from root
 ENV GOSU_VERSION 1.10

11/Dockerfile

@@ -12,7 +12,14 @@ RUN set -ex; \
 	fi
 
 # explicitly set user/group IDs
-RUN groupadd -r postgres --gid=999 && useradd -r -g postgres --uid=999 postgres
+RUN set -eux; \
+	groupadd -r postgres --gid=999; \
+# https://salsa.debian.org/postgresql/postgresql-common/blob/997d842ee744687d99a2b2d95c1083a2615c79e8/debian/postgresql-common.postinst#L32-35
+	useradd -r -g postgres --uid=999 --home-dir=/var/lib/postgresql --shell=/bin/bash postgres; \
+# also create the postgres user's home directory with appropriate permissions
+# see https://github.com/docker-library/postgres/issues/274
+	mkdir -p /var/lib/postgresql; \
+	chown -R postgres:postgres /var/lib/postgresql
 
 # grab gosu for easy step-down from root
 ENV GOSU_VERSION 1.10

9.3/Dockerfile

@@ -12,7 +12,14 @@ RUN set -ex; \
 	fi
 
 # explicitly set user/group IDs
-RUN groupadd -r postgres --gid=999 && useradd -r -g postgres --uid=999 postgres
+RUN set -eux; \
+	groupadd -r postgres --gid=999; \
+# https://salsa.debian.org/postgresql/postgresql-common/blob/997d842ee744687d99a2b2d95c1083a2615c79e8/debian/postgresql-common.postinst#L32-35
+	useradd -r -g postgres --uid=999 --home-dir=/var/lib/postgresql --shell=/bin/bash postgres; \
+# also create the postgres user's home directory with appropriate permissions
+# see https://github.com/docker-library/postgres/issues/274
+	mkdir -p /var/lib/postgresql; \
+	chown -R postgres:postgres /var/lib/postgresql
 
 # grab gosu for easy step-down from root
 ENV GOSU_VERSION 1.10

9.4/Dockerfile

@@ -12,7 +12,14 @@ RUN set -ex; \
 	fi
 
 # explicitly set user/group IDs
-RUN groupadd -r postgres --gid=999 && useradd -r -g postgres --uid=999 postgres
+RUN set -eux; \
+	groupadd -r postgres --gid=999; \
+# https://salsa.debian.org/postgresql/postgresql-common/blob/997d842ee744687d99a2b2d95c1083a2615c79e8/debian/postgresql-common.postinst#L32-35
+	useradd -r -g postgres --uid=999 --home-dir=/var/lib/postgresql --shell=/bin/bash postgres; \
+# also create the postgres user's home directory with appropriate permissions
+# see https://github.com/docker-library/postgres/issues/274
+	mkdir -p /var/lib/postgresql; \
+	chown -R postgres:postgres /var/lib/postgresql
 
 # grab gosu for easy step-down from root
 ENV GOSU_VERSION 1.10

9.5/Dockerfile

@@ -12,7 +12,14 @@ RUN set -ex; \
 	fi
 
 # explicitly set user/group IDs
-RUN groupadd -r postgres --gid=999 && useradd -r -g postgres --uid=999 postgres
+RUN set -eux; \
+	groupadd -r postgres --gid=999; \
+# https://salsa.debian.org/postgresql/postgresql-common/blob/997d842ee744687d99a2b2d95c1083a2615c79e8/debian/postgresql-common.postinst#L32-35
+	useradd -r -g postgres --uid=999 --home-dir=/var/lib/postgresql --shell=/bin/bash postgres; \
+# also create the postgres user's home directory with appropriate permissions
+# see https://github.com/docker-library/postgres/issues/274
+	mkdir -p /var/lib/postgresql; \
+	chown -R postgres:postgres /var/lib/postgresql
 
 # grab gosu for easy step-down from root
 ENV GOSU_VERSION 1.10

9.6/Dockerfile

@@ -12,7 +12,14 @@ RUN set -ex; \
 	fi
 
 # explicitly set user/group IDs
-RUN groupadd -r postgres --gid=999 && useradd -r -g postgres --uid=999 postgres
+RUN set -eux; \
+	groupadd -r postgres --gid=999; \
+# https://salsa.debian.org/postgresql/postgresql-common/blob/997d842ee744687d99a2b2d95c1083a2615c79e8/debian/postgresql-common.postinst#L32-35
+	useradd -r -g postgres --uid=999 --home-dir=/var/lib/postgresql --shell=/bin/bash postgres; \
+# also create the postgres user's home directory with appropriate permissions
+# see https://github.com/docker-library/postgres/issues/274
+	mkdir -p /var/lib/postgresql; \
+	chown -R postgres:postgres /var/lib/postgresql
 
 # grab gosu for easy step-down from root
 ENV GOSU_VERSION 1.10

Dockerfile-debian.template

@@ -12,7 +12,14 @@ RUN set -ex; \
 	fi
 
 # explicitly set user/group IDs
-RUN groupadd -r postgres --gid=999 && useradd -r -g postgres --uid=999 postgres
+RUN set -eux; \
+	groupadd -r postgres --gid=999; \
+# https://salsa.debian.org/postgresql/postgresql-common/blob/997d842ee744687d99a2b2d95c1083a2615c79e8/debian/postgresql-common.postinst#L32-35
+	useradd -r -g postgres --uid=999 --home-dir=/var/lib/postgresql --shell=/bin/bash postgres; \
+# also create the postgres user's home directory with appropriate permissions
+# see https://github.com/docker-library/postgres/issues/274
+	mkdir -p /var/lib/postgresql; \
+	chown -R postgres:postgres /var/lib/postgresql
 
 # grab gosu for easy step-down from root
 ENV GOSU_VERSION 1.10