diff --git a/5.6/jessie/apache/Dockerfile b/5.6/jessie/apache/Dockerfile
index 215972f0..36a32f74 100644
--- a/5.6/jessie/apache/Dockerfile
+++ b/5.6/jessie/apache/Dockerfile
@@ -68,8 +68,10 @@ RUN set -ex \
 	; do \
 		rm -rvf "$dir" \
 		&& mkdir -p "$dir" \
-		&& chown -R "$APACHE_RUN_USER:$APACHE_RUN_GROUP" "$dir"; \
-	done
+		&& chown -R "$APACHE_RUN_USER:$APACHE_RUN_GROUP" "$dir" \
+# allow running as an arbitrary user (https://github.com/docker-library/php/issues/743)
+		&& chmod 1777 "$dir" \
+	; done
 
 # Apache + PHP requires preforking Apache for best results
 RUN a2dismod mpm_event && a2enmod mpm_prefork
diff --git a/5.6/stretch/apache/Dockerfile b/5.6/stretch/apache/Dockerfile
index 4b279ae5..28b5cec2 100644
--- a/5.6/stretch/apache/Dockerfile
+++ b/5.6/stretch/apache/Dockerfile
@@ -68,8 +68,10 @@ RUN set -ex \
 	; do \
 		rm -rvf "$dir" \
 		&& mkdir -p "$dir" \
-		&& chown -R "$APACHE_RUN_USER:$APACHE_RUN_GROUP" "$dir"; \
-	done
+		&& chown -R "$APACHE_RUN_USER:$APACHE_RUN_GROUP" "$dir" \
+# allow running as an arbitrary user (https://github.com/docker-library/php/issues/743)
+		&& chmod 1777 "$dir" \
+	; done
 
 # Apache + PHP requires preforking Apache for best results
 RUN a2dismod mpm_event && a2enmod mpm_prefork
diff --git a/7.0/jessie/apache/Dockerfile b/7.0/jessie/apache/Dockerfile
index 6ff4d230..be760d7e 100644
--- a/7.0/jessie/apache/Dockerfile
+++ b/7.0/jessie/apache/Dockerfile
@@ -68,8 +68,10 @@ RUN set -ex \
 	; do \
 		rm -rvf "$dir" \
 		&& mkdir -p "$dir" \
-		&& chown -R "$APACHE_RUN_USER:$APACHE_RUN_GROUP" "$dir"; \
-	done
+		&& chown -R "$APACHE_RUN_USER:$APACHE_RUN_GROUP" "$dir" \
+# allow running as an arbitrary user (https://github.com/docker-library/php/issues/743)
+		&& chmod 1777 "$dir" \
+	; done
 
 # Apache + PHP requires preforking Apache for best results
 RUN a2dismod mpm_event && a2enmod mpm_prefork
diff --git a/7.0/stretch/apache/Dockerfile b/7.0/stretch/apache/Dockerfile
index 1e78b705..0975973e 100644
--- a/7.0/stretch/apache/Dockerfile
+++ b/7.0/stretch/apache/Dockerfile
@@ -68,8 +68,10 @@ RUN set -ex \
 	; do \
 		rm -rvf "$dir" \
 		&& mkdir -p "$dir" \
-		&& chown -R "$APACHE_RUN_USER:$APACHE_RUN_GROUP" "$dir"; \
-	done
+		&& chown -R "$APACHE_RUN_USER:$APACHE_RUN_GROUP" "$dir" \
+# allow running as an arbitrary user (https://github.com/docker-library/php/issues/743)
+		&& chmod 1777 "$dir" \
+	; done
 
 # Apache + PHP requires preforking Apache for best results
 RUN a2dismod mpm_event && a2enmod mpm_prefork
diff --git a/7.1/jessie/apache/Dockerfile b/7.1/jessie/apache/Dockerfile
index 0a3f6b74..74389f04 100644
--- a/7.1/jessie/apache/Dockerfile
+++ b/7.1/jessie/apache/Dockerfile
@@ -68,8 +68,10 @@ RUN set -ex \
 	; do \
 		rm -rvf "$dir" \
 		&& mkdir -p "$dir" \
-		&& chown -R "$APACHE_RUN_USER:$APACHE_RUN_GROUP" "$dir"; \
-	done
+		&& chown -R "$APACHE_RUN_USER:$APACHE_RUN_GROUP" "$dir" \
+# allow running as an arbitrary user (https://github.com/docker-library/php/issues/743)
+		&& chmod 1777 "$dir" \
+	; done
 
 # Apache + PHP requires preforking Apache for best results
 RUN a2dismod mpm_event && a2enmod mpm_prefork
diff --git a/7.1/stretch/apache/Dockerfile b/7.1/stretch/apache/Dockerfile
index 3f5f7607..48a62cc7 100644
--- a/7.1/stretch/apache/Dockerfile
+++ b/7.1/stretch/apache/Dockerfile
@@ -68,8 +68,10 @@ RUN set -ex \
 	; do \
 		rm -rvf "$dir" \
 		&& mkdir -p "$dir" \
-		&& chown -R "$APACHE_RUN_USER:$APACHE_RUN_GROUP" "$dir"; \
-	done
+		&& chown -R "$APACHE_RUN_USER:$APACHE_RUN_GROUP" "$dir" \
+# allow running as an arbitrary user (https://github.com/docker-library/php/issues/743)
+		&& chmod 1777 "$dir" \
+	; done
 
 # Apache + PHP requires preforking Apache for best results
 RUN a2dismod mpm_event && a2enmod mpm_prefork
diff --git a/7.2/stretch/apache/Dockerfile b/7.2/stretch/apache/Dockerfile
index 69307830..fb510b96 100644
--- a/7.2/stretch/apache/Dockerfile
+++ b/7.2/stretch/apache/Dockerfile
@@ -68,8 +68,10 @@ RUN set -ex \
 	; do \
 		rm -rvf "$dir" \
 		&& mkdir -p "$dir" \
-		&& chown -R "$APACHE_RUN_USER:$APACHE_RUN_GROUP" "$dir"; \
-	done
+		&& chown -R "$APACHE_RUN_USER:$APACHE_RUN_GROUP" "$dir" \
+# allow running as an arbitrary user (https://github.com/docker-library/php/issues/743)
+		&& chmod 1777 "$dir" \
+	; done
 
 # Apache + PHP requires preforking Apache for best results
 RUN a2dismod mpm_event && a2enmod mpm_prefork
diff --git a/7.3-rc/stretch/apache/Dockerfile b/7.3-rc/stretch/apache/Dockerfile
index 7b616de0..64e7de68 100644
--- a/7.3-rc/stretch/apache/Dockerfile
+++ b/7.3-rc/stretch/apache/Dockerfile
@@ -68,8 +68,10 @@ RUN set -ex \
 	; do \
 		rm -rvf "$dir" \
 		&& mkdir -p "$dir" \
-		&& chown -R "$APACHE_RUN_USER:$APACHE_RUN_GROUP" "$dir"; \
-	done
+		&& chown -R "$APACHE_RUN_USER:$APACHE_RUN_GROUP" "$dir" \
+# allow running as an arbitrary user (https://github.com/docker-library/php/issues/743)
+		&& chmod 1777 "$dir" \
+	; done
 
 # Apache + PHP requires preforking Apache for best results
 RUN a2dismod mpm_event && a2enmod mpm_prefork
diff --git a/apache-Dockerfile-block-1 b/apache-Dockerfile-block-1
index a8e00783..8c2fbecb 100644
--- a/apache-Dockerfile-block-1
+++ b/apache-Dockerfile-block-1
@@ -26,8 +26,10 @@ RUN set -ex \
 	; do \
 		rm -rvf "$dir" \
 		&& mkdir -p "$dir" \
-		&& chown -R "$APACHE_RUN_USER:$APACHE_RUN_GROUP" "$dir"; \
-	done
+		&& chown -R "$APACHE_RUN_USER:$APACHE_RUN_GROUP" "$dir" \
+# allow running as an arbitrary user (https://github.com/docker-library/php/issues/743)
+		&& chmod 1777 "$dir" \
+	; done
 
 # Apache + PHP requires preforking Apache for best results
 RUN a2dismod mpm_event && a2enmod mpm_prefork