📦️(mail) make DIR_MAILS variable configurable

That allows downstream packages to e.g. split the builds of
frontend/backend/mail, as it's the case in nixpkgs:
NixOS/nixpkgs@5597a4f

Author: Ma27

src/mail/bin/html-to-plain-text

@@ -1,22 +1,22 @@
 #!/usr/bin/env bash
 set -eo pipefail
 # Run html-to-text to convert all html files to text files
-DIR_MAILS="../backend/core/templates/mail/"
+DOCS_DIR_MAILS="${DOCS_DIR_MAILS:-../backend/core/templates/mail}/"
 
-if [ ! -d "${DIR_MAILS}" ]; then
-  mkdir -p "${DIR_MAILS}";
+if [ ! -d "${DOCS_DIR_MAILS}" ]; then
+  mkdir -p "${DOCS_DIR_MAILS}";
 fi
 
-if [ ! -d "${DIR_MAILS}"html/ ]; then
-  mkdir -p "${DIR_MAILS}"html/;
+if [ ! -d "${DOCS_DIR_MAILS}"html/ ]; then
+  mkdir -p "${DOCS_DIR_MAILS}"html/;
   exit;
 fi
 
-for file in "${DIR_MAILS}"html/*.html;
+for file in "${DOCS_DIR_MAILS}"html/*.html;
     do html-to-text -j ./html-to-text.config.json < "$file" > "${file%.html}".txt; done;
 
-if [ ! -d "${DIR_MAILS}"text/ ]; then
-  mkdir -p "${DIR_MAILS}"text/;
+if [ ! -d "${DOCS_DIR_MAILS}"text/ ]; then
+  mkdir -p "${DOCS_DIR_MAILS}"text/;
 fi
 
-mv "${DIR_MAILS}"html/*.txt "${DIR_MAILS}"text/;
+mv "${DOCS_DIR_MAILS}"html/*.txt "${DOCS_DIR_MAILS}"text/;

src/mail/bin/mjml-to-html

@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 
 # Run mjml command to convert all mjml templates to html files
-DIR_MAILS="../backend/core/templates/mail/html/"
+DOCS_DIR_MAILS="${DOCS_DIR_MAILS:-../backend/core/templates/mail}/html/"
 
-if [ ! -d "${DIR_MAILS}" ]; then
-  mkdir -p "${DIR_MAILS}";
+if [ ! -d "${DOCS_DIR_MAILS}" ]; then
+  mkdir -p "${DOCS_DIR_MAILS}";
 fi
-mjml mjml/*.mjml -o "${DIR_MAILS}";
+mjml mjml/*.mjml -o "${DOCS_DIR_MAILS}";