diff --git a/Dockerfile b/Dockerfile
index 28907ab79d2..2f89c258325 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -13,11 +13,11 @@ ARG EXTRA_DNF_PACKAGES=""
 ARG EXTRA_ALPINE_PACKAGES=""
 ARG FORCE_INSTALL_PACKAGES=1
 RUN --mount=target=/build,source=build \
-    TARGET=${TARGETARCH}${TARGETVARIANT} \
-    /build/run.sh install-packages
+  TARGET=${TARGETARCH}${TARGETVARIANT} \
+  /build/run.sh install-packages
 
 RUN --mount=target=/build,source=build \
-    /build/run.sh setup-user
+  /build/run.sh setup-user
 
 COPY --chmod=644 files/sudoers* /etc/sudoers.d
 
@@ -64,7 +64,7 @@ WORKDIR /data
 STOPSIGNAL SIGTERM
 
 # End user MUST set EULA and change RCON_PASSWORD
-ENV TYPE=VANILLA VERSION=LATEST EULA="" UID=1000 GID=1000
+ENV TYPE=VANILLA VERSION=LATEST EULA="" UID=1000 GID=1000 LC_ALL=en_US.UTF-8
 
 COPY --chmod=755 scripts/start* /
 COPY --chmod=755 bin/ /usr/local/bin/
diff --git a/build/ol/install-packages.sh b/build/ol/install-packages.sh
index 96c09da2c71..22e73eb9468 100755
--- a/build/ol/install-packages.sh
+++ b/build/ol/install-packages.sh
@@ -53,6 +53,9 @@ curl -s https://packagecloud.io/install/repositories/github/git-lfs/script.rpm.s
 dnf update -y
 dnf install -y git-lfs
 
+# Install missing language pack for en_US.UTF-8 (see issue #2487)
+dnf install -y glibc-langpack-en
+
 # Clean up DNF when done
 dnf clean all