Docker: add a default moduli file

Signed-off-by: Nicola Murino <nicola.murino@gmail.com>

Dockerfile

@@ -28,6 +28,8 @@ ARG DOWNLOAD_PLUGINS=false
 
 RUN if [ "${DOWNLOAD_PLUGINS}" = "true" ]; then apt-get update && apt-get install --no-install-recommends -y curl && ./docker/scripts/download-plugins.sh; fi
 
+RUN apt-get update && apt-get install --no-install-recommends -y openssh-server && rm -rf /var/lib/apt/lists/*
+
 FROM debian:bullseye-slim
 
 # Set to "true" to install jq and the optional git and rsync dependencies
@@ -45,6 +47,7 @@ RUN groupadd --system -g 1000 sftpgo && \
     --comment "SFTPGo user" --uid 1000 sftpgo
 
 COPY --from=builder /workspace/sftpgo.json /etc/sftpgo/sftpgo.json
+COPY --from=builder /etc/ssh/moduli /etc/sftpgo/moduli
 COPY --from=builder /workspace/templates /usr/share/sftpgo/templates
 COPY --from=builder /workspace/static /usr/share/sftpgo/static
 COPY --from=builder /workspace/openapi /usr/share/sftpgo/openapi

Dockerfile.alpine

@@ -25,6 +25,7 @@ RUN set -xe && \
     export COMMIT_SHA=${COMMIT_SHA:-$(git describe --always --abbrev=8 --dirty)} && \
     go build $(if [ -n "${FEATURES}" ]; then echo "-tags ${FEATURES}"; fi) -trimpath -ldflags "-s -w -X github.com/drakkan/sftpgo/v2/internal/version.commit=${COMMIT_SHA} -X github.com/drakkan/sftpgo/v2/internal/version.date=`date -u +%FT%TZ`" -v -o sftpgo
 
+RUN apk add --update --no-cache openssh-client-common
 
 FROM alpine:3.16
 
@@ -41,6 +42,7 @@ RUN addgroup -g 1000 -S sftpgo && \
     adduser -u 1000 -h /var/lib/sftpgo -s /sbin/nologin -G sftpgo -S -D -H -g "SFTPGo user" sftpgo
 
 COPY --from=builder /workspace/sftpgo.json /etc/sftpgo/sftpgo.json
+COPY --from=builder /etc/ssh/moduli /etc/sftpgo/moduli
 COPY --from=builder /workspace/templates /usr/share/sftpgo/templates
 COPY --from=builder /workspace/static /usr/share/sftpgo/static
 COPY --from=builder /workspace/openapi /usr/share/sftpgo/openapi

Dockerfile.distroless

@@ -28,7 +28,7 @@ RUN sed -i 's|"users_base_dir": "",|"users_base_dir": "/srv/sftpgo/data",|' sftp
     sed -i 's|"backups"|"/srv/sftpgo/backups"|' sftpgo.json && \
     sed -i 's|"sqlite"|"bolt"|' sftpgo.json
 
-RUN apt-get update && apt-get install --no-install-recommends -y media-types && rm -rf /var/lib/apt/lists/*
+RUN apt-get update && apt-get install --no-install-recommends -y media-types openssh-server && rm -rf /var/lib/apt/lists/*
 
 RUN mkdir /etc/sftpgo /var/lib/sftpgo /srv/sftpgo
 
@@ -38,6 +38,7 @@ COPY --from=builder --chown=1000:1000 /etc/sftpgo /etc/sftpgo
 COPY --from=builder --chown=1000:1000 /srv/sftpgo /srv/sftpgo
 COPY --from=builder --chown=1000:1000 /var/lib/sftpgo /var/lib/sftpgo
 COPY --from=builder --chown=1000:1000 /workspace/sftpgo.json /etc/sftpgo/sftpgo.json
+COPY --from=builder --chown=1000:1000 /etc/ssh/moduli /etc/sftpgo/moduli
 COPY --from=builder /workspace/templates /usr/share/sftpgo/templates
 COPY --from=builder /workspace/static /usr/share/sftpgo/static
 COPY --from=builder /workspace/openapi /usr/share/sftpgo/openapi