diff --git a/3.10/alpine3.14/Dockerfile b/3.10/alpine3.14/Dockerfile
index 6cfe50635..01515ef89 100644
--- a/3.10/alpine3.14/Dockerfile
+++ b/3.10/alpine3.14/Dockerfile
@@ -9,6 +9,10 @@ FROM alpine:3.14
 # ensure local python is preferred over distribution python
 ENV PATH /usr/local/bin:$PATH
 
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
 # runtime dependencies
 RUN set -eux; \
 	apk add --no-cache \
diff --git a/3.10/alpine3.15/Dockerfile b/3.10/alpine3.15/Dockerfile
index 299b1e599..1d742b92e 100644
--- a/3.10/alpine3.15/Dockerfile
+++ b/3.10/alpine3.15/Dockerfile
@@ -9,6 +9,10 @@ FROM alpine:3.15
 # ensure local python is preferred over distribution python
 ENV PATH /usr/local/bin:$PATH
 
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
 # runtime dependencies
 RUN set -eux; \
 	apk add --no-cache \
diff --git a/3.10/bullseye/Dockerfile b/3.10/bullseye/Dockerfile
index aa76b43a1..8677eedca 100644
--- a/3.10/bullseye/Dockerfile
+++ b/3.10/bullseye/Dockerfile
@@ -9,6 +9,10 @@ FROM buildpack-deps:bullseye
 # ensure local python is preferred over distribution python
 ENV PATH /usr/local/bin:$PATH
 
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
 # runtime dependencies
 RUN set -eux; \
 	apt-get update; \
diff --git a/3.10/buster/Dockerfile b/3.10/buster/Dockerfile
index d402d8bc8..d602e2c52 100644
--- a/3.10/buster/Dockerfile
+++ b/3.10/buster/Dockerfile
@@ -9,6 +9,10 @@ FROM buildpack-deps:buster
 # ensure local python is preferred over distribution python
 ENV PATH /usr/local/bin:$PATH
 
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
 # runtime dependencies
 RUN set -eux; \
 	apt-get update; \
diff --git a/3.10/slim-bullseye/Dockerfile b/3.10/slim-bullseye/Dockerfile
index 5fa60f16b..b6edad98b 100644
--- a/3.10/slim-bullseye/Dockerfile
+++ b/3.10/slim-bullseye/Dockerfile
@@ -9,6 +9,10 @@ FROM debian:bullseye-slim
 # ensure local python is preferred over distribution python
 ENV PATH /usr/local/bin:$PATH
 
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
 # runtime dependencies
 RUN set -eux; \
 	apt-get update; \
diff --git a/3.10/slim-buster/Dockerfile b/3.10/slim-buster/Dockerfile
index 1f5dc322b..f7ba6cd85 100644
--- a/3.10/slim-buster/Dockerfile
+++ b/3.10/slim-buster/Dockerfile
@@ -9,6 +9,10 @@ FROM debian:buster-slim
 # ensure local python is preferred over distribution python
 ENV PATH /usr/local/bin:$PATH
 
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
 # runtime dependencies
 RUN set -eux; \
 	apt-get update; \
diff --git a/3.11-rc/alpine3.14/Dockerfile b/3.11-rc/alpine3.14/Dockerfile
index 701ae2bb9..ba48cde6e 100644
--- a/3.11-rc/alpine3.14/Dockerfile
+++ b/3.11-rc/alpine3.14/Dockerfile
@@ -9,6 +9,10 @@ FROM alpine:3.14
 # ensure local python is preferred over distribution python
 ENV PATH /usr/local/bin:$PATH
 
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
 # runtime dependencies
 RUN set -eux; \
 	apk add --no-cache \
diff --git a/3.11-rc/alpine3.15/Dockerfile b/3.11-rc/alpine3.15/Dockerfile
index e63a8a014..09eb8fd7a 100644
--- a/3.11-rc/alpine3.15/Dockerfile
+++ b/3.11-rc/alpine3.15/Dockerfile
@@ -9,6 +9,10 @@ FROM alpine:3.15
 # ensure local python is preferred over distribution python
 ENV PATH /usr/local/bin:$PATH
 
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
 # runtime dependencies
 RUN set -eux; \
 	apk add --no-cache \
diff --git a/3.11-rc/bullseye/Dockerfile b/3.11-rc/bullseye/Dockerfile
index 2016d04d8..d77378691 100644
--- a/3.11-rc/bullseye/Dockerfile
+++ b/3.11-rc/bullseye/Dockerfile
@@ -9,6 +9,10 @@ FROM buildpack-deps:bullseye
 # ensure local python is preferred over distribution python
 ENV PATH /usr/local/bin:$PATH
 
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
 # runtime dependencies
 RUN set -eux; \
 	apt-get update; \
diff --git a/3.11-rc/buster/Dockerfile b/3.11-rc/buster/Dockerfile
index d1857b31e..26aca6c8d 100644
--- a/3.11-rc/buster/Dockerfile
+++ b/3.11-rc/buster/Dockerfile
@@ -9,6 +9,10 @@ FROM buildpack-deps:buster
 # ensure local python is preferred over distribution python
 ENV PATH /usr/local/bin:$PATH
 
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
 # runtime dependencies
 RUN set -eux; \
 	apt-get update; \
diff --git a/3.11-rc/slim-bullseye/Dockerfile b/3.11-rc/slim-bullseye/Dockerfile
index 071f55249..f3727f01d 100644
--- a/3.11-rc/slim-bullseye/Dockerfile
+++ b/3.11-rc/slim-bullseye/Dockerfile
@@ -9,6 +9,10 @@ FROM debian:bullseye-slim
 # ensure local python is preferred over distribution python
 ENV PATH /usr/local/bin:$PATH
 
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
 # runtime dependencies
 RUN set -eux; \
 	apt-get update; \
diff --git a/3.11-rc/slim-buster/Dockerfile b/3.11-rc/slim-buster/Dockerfile
index 2bd587093..ff1a4b923 100644
--- a/3.11-rc/slim-buster/Dockerfile
+++ b/3.11-rc/slim-buster/Dockerfile
@@ -9,6 +9,10 @@ FROM debian:buster-slim
 # ensure local python is preferred over distribution python
 ENV PATH /usr/local/bin:$PATH
 
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
 # runtime dependencies
 RUN set -eux; \
 	apt-get update; \
diff --git a/3.7/alpine3.14/Dockerfile b/3.7/alpine3.14/Dockerfile
index 3928f5d44..8ed2a66bd 100644
--- a/3.7/alpine3.14/Dockerfile
+++ b/3.7/alpine3.14/Dockerfile
@@ -9,6 +9,10 @@ FROM alpine:3.14
 # ensure local python is preferred over distribution python
 ENV PATH /usr/local/bin:$PATH
 
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
 # runtime dependencies
 RUN set -eux; \
 	apk add --no-cache \
diff --git a/3.7/alpine3.15/Dockerfile b/3.7/alpine3.15/Dockerfile
index a5c431791..6b909087f 100644
--- a/3.7/alpine3.15/Dockerfile
+++ b/3.7/alpine3.15/Dockerfile
@@ -9,6 +9,10 @@ FROM alpine:3.15
 # ensure local python is preferred over distribution python
 ENV PATH /usr/local/bin:$PATH
 
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
 # runtime dependencies
 RUN set -eux; \
 	apk add --no-cache \
diff --git a/3.7/bullseye/Dockerfile b/3.7/bullseye/Dockerfile
index 99c3d92f6..62c78d88d 100644
--- a/3.7/bullseye/Dockerfile
+++ b/3.7/bullseye/Dockerfile
@@ -9,6 +9,10 @@ FROM buildpack-deps:bullseye
 # ensure local python is preferred over distribution python
 ENV PATH /usr/local/bin:$PATH
 
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
 # runtime dependencies
 RUN set -eux; \
 	apt-get update; \
diff --git a/3.7/buster/Dockerfile b/3.7/buster/Dockerfile
index 1d9009a4f..e13d019ec 100644
--- a/3.7/buster/Dockerfile
+++ b/3.7/buster/Dockerfile
@@ -9,6 +9,10 @@ FROM buildpack-deps:buster
 # ensure local python is preferred over distribution python
 ENV PATH /usr/local/bin:$PATH
 
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
 # runtime dependencies
 RUN set -eux; \
 	apt-get update; \
diff --git a/3.7/slim-bullseye/Dockerfile b/3.7/slim-bullseye/Dockerfile
index d9f1ed395..def38217f 100644
--- a/3.7/slim-bullseye/Dockerfile
+++ b/3.7/slim-bullseye/Dockerfile
@@ -9,6 +9,10 @@ FROM debian:bullseye-slim
 # ensure local python is preferred over distribution python
 ENV PATH /usr/local/bin:$PATH
 
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
 # runtime dependencies
 RUN set -eux; \
 	apt-get update; \
diff --git a/3.7/slim-buster/Dockerfile b/3.7/slim-buster/Dockerfile
index 840b07cf0..63a07bd70 100644
--- a/3.7/slim-buster/Dockerfile
+++ b/3.7/slim-buster/Dockerfile
@@ -9,6 +9,10 @@ FROM debian:buster-slim
 # ensure local python is preferred over distribution python
 ENV PATH /usr/local/bin:$PATH
 
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
 # runtime dependencies
 RUN set -eux; \
 	apt-get update; \
diff --git a/3.8/alpine3.14/Dockerfile b/3.8/alpine3.14/Dockerfile
index 8cd0e1e5a..b8a033ef0 100644
--- a/3.8/alpine3.14/Dockerfile
+++ b/3.8/alpine3.14/Dockerfile
@@ -9,6 +9,10 @@ FROM alpine:3.14
 # ensure local python is preferred over distribution python
 ENV PATH /usr/local/bin:$PATH
 
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
 # runtime dependencies
 RUN set -eux; \
 	apk add --no-cache \
diff --git a/3.8/alpine3.15/Dockerfile b/3.8/alpine3.15/Dockerfile
index 7f1fdc153..87e405a30 100644
--- a/3.8/alpine3.15/Dockerfile
+++ b/3.8/alpine3.15/Dockerfile
@@ -9,6 +9,10 @@ FROM alpine:3.15
 # ensure local python is preferred over distribution python
 ENV PATH /usr/local/bin:$PATH
 
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
 # runtime dependencies
 RUN set -eux; \
 	apk add --no-cache \
diff --git a/3.8/bullseye/Dockerfile b/3.8/bullseye/Dockerfile
index 91de2e4f8..f4055a299 100644
--- a/3.8/bullseye/Dockerfile
+++ b/3.8/bullseye/Dockerfile
@@ -9,6 +9,10 @@ FROM buildpack-deps:bullseye
 # ensure local python is preferred over distribution python
 ENV PATH /usr/local/bin:$PATH
 
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
 # runtime dependencies
 RUN set -eux; \
 	apt-get update; \
diff --git a/3.8/buster/Dockerfile b/3.8/buster/Dockerfile
index d27955ac6..74caf6085 100644
--- a/3.8/buster/Dockerfile
+++ b/3.8/buster/Dockerfile
@@ -9,6 +9,10 @@ FROM buildpack-deps:buster
 # ensure local python is preferred over distribution python
 ENV PATH /usr/local/bin:$PATH
 
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
 # runtime dependencies
 RUN set -eux; \
 	apt-get update; \
diff --git a/3.8/slim-bullseye/Dockerfile b/3.8/slim-bullseye/Dockerfile
index beba07e0d..26aa0803b 100644
--- a/3.8/slim-bullseye/Dockerfile
+++ b/3.8/slim-bullseye/Dockerfile
@@ -9,6 +9,10 @@ FROM debian:bullseye-slim
 # ensure local python is preferred over distribution python
 ENV PATH /usr/local/bin:$PATH
 
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
 # runtime dependencies
 RUN set -eux; \
 	apt-get update; \
diff --git a/3.8/slim-buster/Dockerfile b/3.8/slim-buster/Dockerfile
index add71d5cb..2bf74279f 100644
--- a/3.8/slim-buster/Dockerfile
+++ b/3.8/slim-buster/Dockerfile
@@ -9,6 +9,10 @@ FROM debian:buster-slim
 # ensure local python is preferred over distribution python
 ENV PATH /usr/local/bin:$PATH
 
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
 # runtime dependencies
 RUN set -eux; \
 	apt-get update; \
diff --git a/3.9/alpine3.14/Dockerfile b/3.9/alpine3.14/Dockerfile
index d989c73b6..ff25c7d74 100644
--- a/3.9/alpine3.14/Dockerfile
+++ b/3.9/alpine3.14/Dockerfile
@@ -9,6 +9,10 @@ FROM alpine:3.14
 # ensure local python is preferred over distribution python
 ENV PATH /usr/local/bin:$PATH
 
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
 # runtime dependencies
 RUN set -eux; \
 	apk add --no-cache \
diff --git a/3.9/alpine3.15/Dockerfile b/3.9/alpine3.15/Dockerfile
index 28322ad56..fd96682b5 100644
--- a/3.9/alpine3.15/Dockerfile
+++ b/3.9/alpine3.15/Dockerfile
@@ -9,6 +9,10 @@ FROM alpine:3.15
 # ensure local python is preferred over distribution python
 ENV PATH /usr/local/bin:$PATH
 
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
 # runtime dependencies
 RUN set -eux; \
 	apk add --no-cache \
diff --git a/3.9/bullseye/Dockerfile b/3.9/bullseye/Dockerfile
index 7f43112d5..9f277f527 100644
--- a/3.9/bullseye/Dockerfile
+++ b/3.9/bullseye/Dockerfile
@@ -9,6 +9,10 @@ FROM buildpack-deps:bullseye
 # ensure local python is preferred over distribution python
 ENV PATH /usr/local/bin:$PATH
 
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
 # runtime dependencies
 RUN set -eux; \
 	apt-get update; \
diff --git a/3.9/buster/Dockerfile b/3.9/buster/Dockerfile
index 477a484bc..cd7252ce1 100644
--- a/3.9/buster/Dockerfile
+++ b/3.9/buster/Dockerfile
@@ -9,6 +9,10 @@ FROM buildpack-deps:buster
 # ensure local python is preferred over distribution python
 ENV PATH /usr/local/bin:$PATH
 
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
 # runtime dependencies
 RUN set -eux; \
 	apt-get update; \
diff --git a/3.9/slim-bullseye/Dockerfile b/3.9/slim-bullseye/Dockerfile
index b1b404552..8604e34a6 100644
--- a/3.9/slim-bullseye/Dockerfile
+++ b/3.9/slim-bullseye/Dockerfile
@@ -9,6 +9,10 @@ FROM debian:bullseye-slim
 # ensure local python is preferred over distribution python
 ENV PATH /usr/local/bin:$PATH
 
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
 # runtime dependencies
 RUN set -eux; \
 	apt-get update; \
diff --git a/3.9/slim-buster/Dockerfile b/3.9/slim-buster/Dockerfile
index b758ace5e..7ff174c3d 100644
--- a/3.9/slim-buster/Dockerfile
+++ b/3.9/slim-buster/Dockerfile
@@ -9,6 +9,10 @@ FROM debian:buster-slim
 # ensure local python is preferred over distribution python
 ENV PATH /usr/local/bin:$PATH
 
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
 # runtime dependencies
 RUN set -eux; \
 	apt-get update; \
diff --git a/Dockerfile-linux.template b/Dockerfile-linux.template
index 5c8c0c742..632e86cde 100644
--- a/Dockerfile-linux.template
+++ b/Dockerfile-linux.template
@@ -19,6 +19,10 @@ FROM buildpack-deps:{{ env.variant }}
 # ensure local python is preferred over distribution python
 ENV PATH /usr/local/bin:$PATH
 
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
+
 # runtime dependencies
 {{ if is_alpine then ( -}}
 RUN set -eux; \