Make more links use HTTPS

Author: der-eismann

Dockerfile

@@ -50,7 +50,7 @@ SHELL ["/bin/bash", "-o", "pipefail", "-c"]
 # hadolint ignore=DL3059
 RUN curl -sS https://package.perforce.com/perforce.pubkey | gpg --dearmor > /etc/apt/trusted.gpg.d/perforce.gpg
 # hadolint ignore=DL3059
-RUN echo 'deb http://package.perforce.com/apt/ubuntu bionic release' > /etc/apt/sources.list.d/perforce.list
+RUN echo 'deb https://package.perforce.com/apt/ubuntu focal release' > /etc/apt/sources.list.d/perforce.list
 
 # install dependencies and Python tools
 # hadolint ignore=DL3008,DL3009

docker/README.md

@@ -4,7 +4,7 @@
 
 Built from official source: https://github.com/oracle/opengrok/releases/
 
-You can learn more about OpenGrok at http://oracle.github.io/opengrok/
+You can learn more about OpenGrok at https://oracle.github.io/opengrok/
 
 The container is available from DockerHub at https://hub.docker.com/r/opengrok/docker/