diff --git a/28/apache/Dockerfile b/28/apache/Dockerfile
index d63fb3a8..00bfaa72 100644
--- a/28/apache/Dockerfile
+++ b/28/apache/Dockerfile
@@ -140,7 +140,7 @@ RUN { \
     } > /etc/apache2/conf-available/apache-limits.conf; \
     a2enconf apache-limits
 
-ENV NEXTCLOUD_VERSION 28.0.11
+ENV NEXTCLOUD_VERSION 28.0.12
 
 RUN set -ex; \
     fetchDeps=" \
@@ -150,8 +150,8 @@ RUN set -ex; \
     apt-get update; \
     apt-get install -y --no-install-recommends $fetchDeps; \
     \
-    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-28.0.11.tar.bz2"; \
-    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-28.0.11.tar.bz2.asc"; \
+    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-28.0.12.tar.bz2"; \
+    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-28.0.12.tar.bz2.asc"; \
     export GNUPGHOME="$(mktemp -d)"; \
 # gpg key from https://nextcloud.com/nextcloud.asc
     gpg --batch --keyserver keyserver.ubuntu.com --recv-keys 28806A878AE423A28372792ED75899B9A724937A; \
diff --git a/28/fpm-alpine/Dockerfile b/28/fpm-alpine/Dockerfile
index a7352299..18af3386 100644
--- a/28/fpm-alpine/Dockerfile
+++ b/28/fpm-alpine/Dockerfile
@@ -120,7 +120,7 @@ RUN { \
 VOLUME /var/www/html
 
 
-ENV NEXTCLOUD_VERSION 28.0.11
+ENV NEXTCLOUD_VERSION 28.0.12
 
 RUN set -ex; \
     apk add --no-cache --virtual .fetch-deps \
@@ -128,8 +128,8 @@ RUN set -ex; \
         gnupg \
     ; \
     \
-    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-28.0.11.tar.bz2"; \
-    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-28.0.11.tar.bz2.asc"; \
+    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-28.0.12.tar.bz2"; \
+    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-28.0.12.tar.bz2.asc"; \
     export GNUPGHOME="$(mktemp -d)"; \
 # gpg key from https://nextcloud.com/nextcloud.asc
     gpg --batch --keyserver keyserver.ubuntu.com  --recv-keys 28806A878AE423A28372792ED75899B9A724937A; \
diff --git a/28/fpm/Dockerfile b/28/fpm/Dockerfile
index ae69769d..40598ea8 100644
--- a/28/fpm/Dockerfile
+++ b/28/fpm/Dockerfile
@@ -125,7 +125,7 @@ RUN { \
 VOLUME /var/www/html
 
 
-ENV NEXTCLOUD_VERSION 28.0.11
+ENV NEXTCLOUD_VERSION 28.0.12
 
 RUN set -ex; \
     fetchDeps=" \
@@ -135,8 +135,8 @@ RUN set -ex; \
     apt-get update; \
     apt-get install -y --no-install-recommends $fetchDeps; \
     \
-    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-28.0.11.tar.bz2"; \
-    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-28.0.11.tar.bz2.asc"; \
+    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-28.0.12.tar.bz2"; \
+    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-28.0.12.tar.bz2.asc"; \
     export GNUPGHOME="$(mktemp -d)"; \
 # gpg key from https://nextcloud.com/nextcloud.asc
     gpg --batch --keyserver keyserver.ubuntu.com --recv-keys 28806A878AE423A28372792ED75899B9A724937A; \
diff --git a/29/apache/Dockerfile b/29/apache/Dockerfile
index 8e9316c9..58132fb2 100644
--- a/29/apache/Dockerfile
+++ b/29/apache/Dockerfile
@@ -140,7 +140,7 @@ RUN { \
     } > /etc/apache2/conf-available/apache-limits.conf; \
     a2enconf apache-limits
 
-ENV NEXTCLOUD_VERSION 29.0.8
+ENV NEXTCLOUD_VERSION 29.0.9
 
 RUN set -ex; \
     fetchDeps=" \
@@ -150,8 +150,8 @@ RUN set -ex; \
     apt-get update; \
     apt-get install -y --no-install-recommends $fetchDeps; \
     \
-    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-29.0.8.tar.bz2"; \
-    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-29.0.8.tar.bz2.asc"; \
+    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-29.0.9.tar.bz2"; \
+    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-29.0.9.tar.bz2.asc"; \
     export GNUPGHOME="$(mktemp -d)"; \
 # gpg key from https://nextcloud.com/nextcloud.asc
     gpg --batch --keyserver keyserver.ubuntu.com --recv-keys 28806A878AE423A28372792ED75899B9A724937A; \
diff --git a/29/fpm-alpine/Dockerfile b/29/fpm-alpine/Dockerfile
index 5344aed5..de280bc7 100644
--- a/29/fpm-alpine/Dockerfile
+++ b/29/fpm-alpine/Dockerfile
@@ -120,7 +120,7 @@ RUN { \
 VOLUME /var/www/html
 
 
-ENV NEXTCLOUD_VERSION 29.0.8
+ENV NEXTCLOUD_VERSION 29.0.9
 
 RUN set -ex; \
     apk add --no-cache --virtual .fetch-deps \
@@ -128,8 +128,8 @@ RUN set -ex; \
         gnupg \
     ; \
     \
-    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-29.0.8.tar.bz2"; \
-    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-29.0.8.tar.bz2.asc"; \
+    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-29.0.9.tar.bz2"; \
+    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-29.0.9.tar.bz2.asc"; \
     export GNUPGHOME="$(mktemp -d)"; \
 # gpg key from https://nextcloud.com/nextcloud.asc
     gpg --batch --keyserver keyserver.ubuntu.com  --recv-keys 28806A878AE423A28372792ED75899B9A724937A; \
diff --git a/29/fpm/Dockerfile b/29/fpm/Dockerfile
index a69317bb..c0ebab1a 100644
--- a/29/fpm/Dockerfile
+++ b/29/fpm/Dockerfile
@@ -125,7 +125,7 @@ RUN { \
 VOLUME /var/www/html
 
 
-ENV NEXTCLOUD_VERSION 29.0.8
+ENV NEXTCLOUD_VERSION 29.0.9
 
 RUN set -ex; \
     fetchDeps=" \
@@ -135,8 +135,8 @@ RUN set -ex; \
     apt-get update; \
     apt-get install -y --no-install-recommends $fetchDeps; \
     \
-    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-29.0.8.tar.bz2"; \
-    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-29.0.8.tar.bz2.asc"; \
+    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-29.0.9.tar.bz2"; \
+    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-29.0.9.tar.bz2.asc"; \
     export GNUPGHOME="$(mktemp -d)"; \
 # gpg key from https://nextcloud.com/nextcloud.asc
     gpg --batch --keyserver keyserver.ubuntu.com --recv-keys 28806A878AE423A28372792ED75899B9A724937A; \
diff --git a/30/apache/Dockerfile b/30/apache/Dockerfile
index b01d9611..0e0fd6aa 100644
--- a/30/apache/Dockerfile
+++ b/30/apache/Dockerfile
@@ -140,7 +140,7 @@ RUN { \
     } > /etc/apache2/conf-available/apache-limits.conf; \
     a2enconf apache-limits
 
-ENV NEXTCLOUD_VERSION 30.0.1
+ENV NEXTCLOUD_VERSION 30.0.2
 
 RUN set -ex; \
     fetchDeps=" \
@@ -150,8 +150,8 @@ RUN set -ex; \
     apt-get update; \
     apt-get install -y --no-install-recommends $fetchDeps; \
     \
-    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-30.0.1.tar.bz2"; \
-    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-30.0.1.tar.bz2.asc"; \
+    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-30.0.2.tar.bz2"; \
+    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-30.0.2.tar.bz2.asc"; \
     export GNUPGHOME="$(mktemp -d)"; \
 # gpg key from https://nextcloud.com/nextcloud.asc
     gpg --batch --keyserver keyserver.ubuntu.com --recv-keys 28806A878AE423A28372792ED75899B9A724937A; \
diff --git a/30/fpm-alpine/Dockerfile b/30/fpm-alpine/Dockerfile
index a6197cc8..79783a65 100644
--- a/30/fpm-alpine/Dockerfile
+++ b/30/fpm-alpine/Dockerfile
@@ -120,7 +120,7 @@ RUN { \
 VOLUME /var/www/html
 
 
-ENV NEXTCLOUD_VERSION 30.0.1
+ENV NEXTCLOUD_VERSION 30.0.2
 
 RUN set -ex; \
     apk add --no-cache --virtual .fetch-deps \
@@ -128,8 +128,8 @@ RUN set -ex; \
         gnupg \
     ; \
     \
-    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-30.0.1.tar.bz2"; \
-    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-30.0.1.tar.bz2.asc"; \
+    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-30.0.2.tar.bz2"; \
+    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-30.0.2.tar.bz2.asc"; \
     export GNUPGHOME="$(mktemp -d)"; \
 # gpg key from https://nextcloud.com/nextcloud.asc
     gpg --batch --keyserver keyserver.ubuntu.com  --recv-keys 28806A878AE423A28372792ED75899B9A724937A; \
diff --git a/30/fpm/Dockerfile b/30/fpm/Dockerfile
index 9ab2e055..4258ff9d 100644
--- a/30/fpm/Dockerfile
+++ b/30/fpm/Dockerfile
@@ -125,7 +125,7 @@ RUN { \
 VOLUME /var/www/html
 
 
-ENV NEXTCLOUD_VERSION 30.0.1
+ENV NEXTCLOUD_VERSION 30.0.2
 
 RUN set -ex; \
     fetchDeps=" \
@@ -135,8 +135,8 @@ RUN set -ex; \
     apt-get update; \
     apt-get install -y --no-install-recommends $fetchDeps; \
     \
-    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-30.0.1.tar.bz2"; \
-    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-30.0.1.tar.bz2.asc"; \
+    curl -fsSL -o nextcloud.tar.bz2 "https://download.nextcloud.com/server/releases/nextcloud-30.0.2.tar.bz2"; \
+    curl -fsSL -o nextcloud.tar.bz2.asc "https://download.nextcloud.com/server/releases/nextcloud-30.0.2.tar.bz2.asc"; \
     export GNUPGHOME="$(mktemp -d)"; \
 # gpg key from https://nextcloud.com/nextcloud.asc
     gpg --batch --keyserver keyserver.ubuntu.com --recv-keys 28806A878AE423A28372792ED75899B9A724937A; \
diff --git a/README.md b/README.md
index ab6608ad..d0448cb7 100644
--- a/README.md
+++ b/README.md
@@ -149,7 +149,7 @@ __PostgreSQL__:
 - `POSTGRES_PASSWORD` Password for the database user using postgres.
 - `POSTGRES_HOST` Hostname of the database server using postgres.
 
-As an alternative to passing sensitive information via environment variables, `_FILE` may be appended to the previously listed environment variables, causing the initialization script to load the values for those variables from files present in the container. See [Docker secrets](#docker-secrets) section below.
+As an alternative to passing sensitive information via environment variables, `_FILE` may be appended to the previously listed environment variables (except for `POSTGRES_HOST` and `MYSQL_HOST`, which cannot be loaded from files), , causing the initialization script to load the values for those variables from files present in the container. See [Docker secrets](#docker-secrets) section below.
 
 If you set any group of values (i.e. all of `MYSQL_DATABASE`, `MYSQL_USER`, `MYSQL_PASSWORD`, `MYSQL_HOST`), they will not be asked in the install page on first run. With a complete configuration by using all variables for your database type, you can additionally configure your Nextcloud instance by setting admin user and password (only works if you set both):
 
@@ -242,6 +242,10 @@ During a fresh Nextcloud installation, the latest version (from the image) of th
 The copied files, however, are **not** automatically overwritten whenever you update your environment with a newer Nextcloud image. This is to prevent local changes in `/var/www/html/config` from being unexpectedly overwritten. This may lead to your image-specific configuration files becoming outdated and image functionality not matching that which is documented.
 
 A warning will be generated in the container log output when outdated image-specific configuration files are detected at startup in a running container. When you see this warning, you should manually compare (or copy) the files from `/usr/src/nextcloud/config` to `/var/www/html/config`.
+A command to copy these configs would e.g. be:
+```console
+docker exec <container-name> sh -c "cp /usr/src/nextcloud/config/*.php /var/www/html/config"
+```
 
 As long as you have not modified any of the provided config files in `/var/www/html/config` (other than `config.php`) or only added new ones with names that do not conflict with the image specific ones, copying the new ones into place should be safe (but check the source path `/usr/src/nextcloud/config` for any newly named config files to avoid new overlaps just in case).
 
@@ -473,7 +477,7 @@ secrets:
 
 Currently, this is only supported for `NEXTCLOUD_ADMIN_PASSWORD`, `NEXTCLOUD_ADMIN_USER`, `MYSQL_DATABASE`, `MYSQL_PASSWORD`, `MYSQL_USER`, `POSTGRES_DB`, `POSTGRES_PASSWORD`, `POSTGRES_USER`, `REDIS_HOST_PASSWORD`, `SMTP_PASSWORD`, `OBJECTSTORE_S3_KEY`, and `OBJECTSTORE_S3_SECRET`.
 
-If you set any group of values (i.e. all of `MYSQL_DATABASE_FILE`, `MYSQL_USER_FILE`, `MYSQL_PASSWORD_FILE`, `MYSQL_HOST`), the script will not use the corresponding group of environment variables (`MYSQL_DATABASE`, `MYSQL_USER`, `MYSQL_PASSWORD`, `MYSQL_HOST`).
+If you set any group of values (i.e. all of `MYSQL_DATABASE_FILE`, `MYSQL_USER_FILE`, `MYSQL_PASSWORD_FILE`), the script will not use the corresponding group of environment variables (`MYSQL_DATABASE`, `MYSQL_USER`, `MYSQL_PASSWORD`).
 
 # Make your Nextcloud available from the internet
 Until here, your Nextcloud is just available from your docker host. If you want your Nextcloud available from the internet adding SSL encryption is mandatory.
diff --git a/docker-entrypoint.sh b/docker-entrypoint.sh
index 8e178f2e..87336074 100755
--- a/docker-entrypoint.sh
+++ b/docker-entrypoint.sh
@@ -207,12 +207,20 @@ if expr "$1" : "apache" 1>/dev/null || [ "$1" = "php-fpm" ] || [ "${NEXTCLOUD_UP
                         # shellcheck disable=SC2016
                         install_options=$install_options' --database-name "$SQLITE_DATABASE"'
                         install=true
-                    elif [ -n "${MYSQL_DATABASE+x}" ] && [ -n "${MYSQL_USER+x}" ] && [ -n "${MYSQL_PASSWORD+x}" ] && [ -n "${MYSQL_HOST+x}" ]; then
+                    elif [ -n "${MYSQL_DATABASE+x}" ] && [ -n "${MYSQL_USER+x}" ] && [ -n "${MYSQL_PASSWORD+x}" ]; then
+                        if [ -z "${MYSQL_HOST}" ] ; then
+                            echo "MySQL credentials set but no MySQL host set. Please make sure \$MYSQL_HOST is set."
+                            exit 1
+                        fi
                         echo "Installing with MySQL database"
                         # shellcheck disable=SC2016
                         install_options=$install_options' --database mysql --database-name "$MYSQL_DATABASE" --database-user "$MYSQL_USER" --database-pass "$MYSQL_PASSWORD" --database-host "$MYSQL_HOST"'
                         install=true
-                    elif [ -n "${POSTGRES_DB+x}" ] && [ -n "${POSTGRES_USER+x}" ] && [ -n "${POSTGRES_PASSWORD+x}" ] && [ -n "${POSTGRES_HOST+x}" ]; then
+                    elif [ -n "${POSTGRES_DB+x}" ] && [ -n "${POSTGRES_USER+x}" ] && [ -n "${POSTGRES_PASSWORD+x}" ]; then
+                        if [ -z "${POSTGRES_HOST}" ] ; then
+                            echo "PostgreSQL credentials set but no PostgreSQL host set. Please make sure \$POSTGRES_HOST is set."
+                            exit 1
+                        fi
                         echo "Installing with PostgreSQL database"
                         # shellcheck disable=SC2016
                         install_options=$install_options' --database pgsql --database-name "$POSTGRES_DB" --database-user "$POSTGRES_USER" --database-pass "$POSTGRES_PASSWORD" --database-host "$POSTGRES_HOST"'
diff --git a/generate-stackbrew-library.sh b/generate-stackbrew-library.sh
index 43c9aab0..7a1332ef 100755
--- a/generate-stackbrew-library.sh
+++ b/generate-stackbrew-library.sh
@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
 
-stable_channel='30.0.1'
+stable_channel='30.0.2'
 
 self="$(basename "$BASH_SOURCE")"
 cd "$(dirname "$(readlink -f "$BASH_SOURCE")")"
diff --git a/latest.txt b/latest.txt
index 1c8398ee..4f3a0694 100644
--- a/latest.txt
+++ b/latest.txt
@@ -1 +1 @@
-30.0.1
+30.0.2
diff --git a/versions.json b/versions.json
index db86e255..e719e79f 100644
--- a/versions.json
+++ b/versions.json
@@ -1,9 +1,9 @@
 {
   "30": {
     "branch": "30",
-    "version": "30.0.1",
-    "url": "https://download.nextcloud.com/server/releases/nextcloud-30.0.1.tar.bz2",
-    "ascUrl": "https://download.nextcloud.com/server/releases/nextcloud-30.0.1.tar.bz2.asc",
+    "version": "30.0.2",
+    "url": "https://download.nextcloud.com/server/releases/nextcloud-30.0.2.tar.bz2",
+    "ascUrl": "https://download.nextcloud.com/server/releases/nextcloud-30.0.2.tar.bz2.asc",
     "variants": {
       "apache": {
         "variant": "apache",
@@ -27,9 +27,9 @@
   },
   "29": {
     "branch": "29",
-    "version": "29.0.8",
-    "url": "https://download.nextcloud.com/server/releases/nextcloud-29.0.8.tar.bz2",
-    "ascUrl": "https://download.nextcloud.com/server/releases/nextcloud-29.0.8.tar.bz2.asc",
+    "version": "29.0.9",
+    "url": "https://download.nextcloud.com/server/releases/nextcloud-29.0.9.tar.bz2",
+    "ascUrl": "https://download.nextcloud.com/server/releases/nextcloud-29.0.9.tar.bz2.asc",
     "variants": {
       "apache": {
         "variant": "apache",
@@ -53,9 +53,9 @@
   },
   "28": {
     "branch": "28",
-    "version": "28.0.11",
-    "url": "https://download.nextcloud.com/server/releases/nextcloud-28.0.11.tar.bz2",
-    "ascUrl": "https://download.nextcloud.com/server/releases/nextcloud-28.0.11.tar.bz2.asc",
+    "version": "28.0.12",
+    "url": "https://download.nextcloud.com/server/releases/nextcloud-28.0.12.tar.bz2",
+    "ascUrl": "https://download.nextcloud.com/server/releases/nextcloud-28.0.12.tar.bz2.asc",
     "variants": {
       "apache": {
         "variant": "apache",