Generate SSH keys in the docker container

amd64.Dockerfile

@@ -16,7 +16,7 @@ RUN cd BTCPayServer && dotnet publish --output /app/ --configuration Release
 FROM mcr.microsoft.com/dotnet/core/aspnet:2.1.9-alpine3.7
 
 ENV DOTNET_SYSTEM_GLOBALIZATION_INVARIANT false
-RUN apk add --no-cache icu-libs
+RUN apk add --no-cache icu-libs openssh-keygen
 
 ENV LC_ALL en_US.UTF-8
 ENV LANG en_US.UTF-8

arm32v7.Dockerfile

@@ -20,7 +20,7 @@ RUN cd BTCPayServer && dotnet publish --output /app/ --configuration Release
 # Force the builder machine to take make an arm runtime image. This is fine as long as the builder does not run any program
 FROM mcr.microsoft.com/dotnet/core/aspnet:2.1.9-stretch-slim-arm32v7
 COPY --from=builder /usr/bin/qemu-arm-static /usr/bin/qemu-arm-static
-RUN apt-get update && apt-get install -y --no-install-recommends iproute2 \
+RUN apt-get update && apt-get install -y --no-install-recommends iproute2 openssh-client \
     && rm -rf /var/lib/apt/lists/* 
 
 ENV LC_ALL en_US.UTF-8

docker-entrypoint.sh

@@ -1,4 +1,15 @@
 #!/bin/sh
 
 echo "$(/sbin/ip route|awk '/default/ { print $3 }')  host.docker.internal" >> /etc/hosts
+
+if ! [ -f "$BTCPAY_SSHKEYFILE" ]; then
+    echo "Creating BTCPay Server SSH key File..."
+    ssh-keygen -t rsa -f "$BTCPAY_SSHKEYFILE" -q -P "" -m PEM -C btcpayserver > /dev/null
+fi
+
+if [ -f "$BTCPAY_SSHAUTHORIZEDKEYS" ] && ! grep -q "btcpayserver$" "$BTCPAY_SSHAUTHORIZEDKEYS"; then
+    echo "Adding BTCPay Server SSH key to authorized keys"
+    cat "$BTCPAY_SSHKEYFILE.pub" >> "$BTCPAY_SSHAUTHORIZEDKEYS"
+fi
+
 exec dotnet BTCPayServer.dll