Add X-Forwarded-Proto header in reverse_proxy (#56)

---------

Co-authored-by: Mo Balaa <[email protected]>

src/client-link/entrypoint.sh

@@ -21,28 +21,37 @@ if [ -z ${FORWARD_ONLY+x} ]; then
  echo "Configure Caddy for use with TLS backend"
  if [ ! -z ${CADDY_TLS_INSECURE+x} ]; then # if CADDY_TLS_INSECURE
  echo "Skip TLS verification"
- export EXPOSE=$(cat <<-END
+ EXPOSE=$(cat <<-END
 $EXPOSE {
  transport http {
  tls
  tls_insecure_skip_verify
  read_buffer 8192
  }
+ header_up X-Forwarded-Proto {scheme}
  }
 END
 )
 
  else # CADDY_TLS_INSECURE is false
- export EXPOSE=$(cat <<-END
+ EXPOSE=$(cat <<-END
 $EXPOSE {
  transport http {
  tls
  read_buffer 8192
  }
+ header_up X-Forwarded-Proto {scheme}
  }
 END
 )
  fi
+ else
+ EXPOSE=$(cat <<-END
+$EXPOSE {
+ header_up X-Forwarded-Proto {scheme}
+ }
+END
+)
  fi
 
  CADDYFILE='/etc/Caddyfile'
@@ -72,6 +81,7 @@ END
 END
  )
  fi
+ export EXPOSE
  export TLS_INTERNAL_CONFIG
  envsubst < /etc/Caddyfile.template > $CADDYFILE
  caddy run --config $CADDYFILE