easy-rsa: Drop all mention of the vars file

* This exists to import/export a number of easy-rsa default values but
  creates headaches for old volumes due to changes where easy-rsa
  insists on loading the var file if the environment variable is set.
* Going forward people should pass the variables via:
    `docker run -e EASYRSA_var ...`
* Closes #608

Dockerfile

@@ -15,8 +15,7 @@ RUN echo "http://dl-cdn.alpinelinux.org/alpine/edge/testing/" >> /etc/apk/reposi
 ENV OPENVPN=/etc/openvpn
 ENV EASYRSA=/usr/share/easy-rsa \
     EASYRSA_CRL_DAYS=3650 \
-    EASYRSA_PKI=$OPENVPN/pki \
-    EASYRSA_VARS_FILE=$OPENVPN/vars
+    EASYRSA_PKI=$OPENVPN/pki
 
 VOLUME ["/etc/openvpn"]
 

Dockerfile.aarch64

@@ -15,7 +15,6 @@ RUN echo "http://dl-4.alpinelinux.org/alpine/edge/community/" >> /etc/apk/reposi
 ENV OPENVPN /etc/openvpn
 ENV EASYRSA /usr/share/easy-rsa
 ENV EASYRSA_PKI $OPENVPN/pki
-ENV EASYRSA_VARS_FILE $OPENVPN/vars
 
 # Prevents refused client connection because of an expired CRL
 ENV EASYRSA_CRL_DAYS 3650

bin/easyrsa_vars

@@ -1,39 +0,0 @@
-#!/bin/sh
-
-#
-# Import/export EasyRSA default settings
-#
-
-if [ "$DEBUG" == "1" ]; then
-  set -x
-fi
-
-set -e
-
-if [ $# -lt 1 ]; then
-    echo "No command provided"
-    echo
-    echo "$0 export > /path/to/file"
-    echo "$0 import < /path/to/file"
-    exit 1
-fi
-
-cmd=$1
-shift
-
-case "$cmd" in
-    export)
-        if [ -f "$EASYRSA_VARS_FILE" ]; then
-            cat "$EASYRSA_VARS_FILE"
-        else
-            cat "$EASYRSA/vars.example"
-        fi
-        ;;
-    import)
-        cat > "$EASYRSA_VARS_FILE"
-        ;;
-    *)
-        echo "Unknown cmd \"$cmd\""
-        exit 2
-        ;;
-esac

bin/ovpn_initpki

@@ -15,10 +15,6 @@ source "$OPENVPN/ovpn_env.sh"
 # Specify "nopass" as arg[2] to make the CA insecure (not recommended!)
 nopass=$1
 
-# EasyRSA 3.0.7 introduced checks for $EASYRSA_VARS_FILE existence
-# in the init-pki script
-touch $EASYRSA_VARS_FILE
-
 # Provides a sufficient warning before erasing pre-existing files
 easyrsa init-pki