Quick way to sanitise environment files for Docker
takes a given file name and searches each variables that end in __SECRET. If found, then anything after an '=' sign will be sanitised.
for example: unsanitised .env file
S_API_KEY=abc123efg456
SOMEVALUE=true
B_API_KEY=abc123efg456
If you wanted to publish this with the secrets removed, the add a __SECRET to the variable names you need sanitised
S_API_KEY__SECRET=abc123efg456
SOMEVALUE=true
B_API_KEY__SECRET=abc123efg456
Then run 'sanitiser .env'
A new file will be created called '.env(sanitised)', with the following content
S_API_KEY__SECRET=<enter your value>
SOMEVALUE=true
B_API_KEY__SECRET=<enter your value>