acme_extract -> acme_extract.py + F_BIN to avoid .py

Makefile

@@ -11,7 +11,7 @@ VCS_VER = $(shell git describe --tags --contains --always)
 all: lint build backup generate-accounts tests clean
 
 build:
-	docker build --force-rm -t $(NAME) . --build-arg VCS_VER=$(VCS_VER) --build-arg VCS_REF=$(VCS_REF)
+	docker build -t $(NAME) . --build-arg VCS_VER=$(VCS_VER) --build-arg VCS_REF=$(VCS_REF)
 
 backup:
 # if backup directories exist, clean hasn't been called, therefore

target/scripts/helpers/ssl.sh

@@ -418,8 +418,8 @@ function _extract_certs_from_acme
   fi
 
   local KEY CERT
-  KEY=$(acme_extract /etc/letsencrypt/acme.json "${CERT_DOMAIN}" --key)
-  CERT=$(acme_extract /etc/letsencrypt/acme.json "${CERT_DOMAIN}" --cert)
+  KEY=$(acme_extract.py /etc/letsencrypt/acme.json "${CERT_DOMAIN}" --key)
+  CERT=$(acme_extract.py /etc/letsencrypt/acme.json "${CERT_DOMAIN}" --cert)
 
   if [[ -z ${KEY} ]] || [[ -z ${CERT} ]]
   then

test/linting/lint.sh

@@ -99,7 +99,7 @@ function _shellcheck
     -not -path './target/docker-configomat/*'
   )"
   # shellcheck disable=SC2248
-  F_BIN="$(grep -l /bin/bash target/bin/*)"
+  F_BIN="$(find 'target/bin' -type f -not -name '*.py')"
   F_BATS="$(find 'test' -maxdepth 1 -type f -iname '*.bats')"
 
   # This command is a bit easier to grok as multi-line.