Fix cert creation image

Now using alpine.
Debian stretch is not supported anymore (apt udpate failed). Newer versions eem to not ship openjdk8 by default, but you have to add a custom repo
Alpine seems easier and should hopefully be easier to update.

Author: XoMEX

certs/Dockerfile

@@ -1,13 +1,11 @@
-FROM debian:stretch
+FROM alpine:3.18
 
-RUN apt-get update 
-RUN apt-get install software-properties-common -y
-RUN apt-add-repository 'deb http://security.debian.org/debian-security stretch/updates main'
-RUN apt-get update && apt-get install -y \
+RUN apk add \
     openssl \
-    libnss3-tools \
-    openjdk-8-jdk \
-    curl
+    nss-tools \
+    openjdk8 \
+    curl \
+    && apk cache clean
 
 WORKDIR /certs
 COPY generateCerts.sh cert.cfg /run/

certs/generateCerts.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 set -eu
 
 WARN='\033[0;31m'
@@ -39,5 +39,6 @@ pk12util -i ec256.p12 -d db -K password -W password
 echo "Creating Java keystore"
 keytool -importkeystore -srckeystore rsa2048.p12 -srcstoretype pkcs12 -destkeystore keys.jks -deststoretype jks -alias cert -destalias rsa2048 -srcstorepass password -deststorepass password
 keytool -importkeystore -srckeystore ec256.p12 -srcstoretype pkcs12 -destkeystore keys.jks -deststoretype jks -alias cert -destalias ec256 -srcstorepass password -deststorepass password
-#use test-ca from rustls
-curl -L https://github.com/ctz/rustls/tarball/master | tar zx --wildcards  --strip-components=1 '*/test-ca/'
+# fetch test-ca from rustls, used for LIBRESSL
+# alpine tar does not have a --wildcards flag. Nonetheless it still extracts correctly but with an error - so use ls to check if it was extracted correctly
+curl -L https://github.com/ctz/rustls/tarball/master | tar x -z --strip-components=1 '*/test-ca/' || ls test-ca/rsa/end.rsa test-ca/rsa/end.fullchain

certs/setup.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/bash -e
 cd "$(dirname "$0")" || exit 1
 set -eu
 

setup.sh

@@ -1,12 +1,12 @@
-#!/bin/bash
-cd certs
+#!/bin/bash -e
+cd "$(dirname "$0")" || exit 1
+
 echo "[+] Generate certificates"
-./setup.sh
-cd ..
+./certs/setup.sh
 
 echo "[+] Build base image"
 ./images/baseimage/build-base.sh
 
 echo " "
 echo "To build every available docker image, or every docker image of a specific TLS Libraries, use the 'build-everything.py' script (requires python >=3.7)"
-echo "To build only specific TLS Libraries, use the 'build.sh' scripts inside the subfolders of 'images/'."
+echo "To build only specific TLS Libraries, use the 'build.sh' scripts inside the subfolders of 'images/'."