specify ubuntu version

Author: conao3

dockerfiles/CondaDockerfile

@@ -1,10 +1,11 @@
 # We will use Ubuntu for our image
-FROM ubuntu:latest
+FROM ubuntu:22.04
 
 # Updating Ubuntu packages
 
 ARG CLOJURE_TOOLS_VERSION=1.10.1.507
 
+ENV DEBIAN_FRONTEND=noninteractive
 
 RUN apt-get -qq update && apt-get -qq -y install curl wget bzip2 openjdk-8-jdk-headless \
     && curl -sSL https://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh -o /tmp/miniconda.sh \

dockerfiles/Py38Dockerfile

@@ -1,10 +1,11 @@
 # We will use Ubuntu for our image
-FROM ubuntu:latest
+FROM ubuntu:22.04
 
 # Updating Ubuntu packages
 
 ARG CLOJURE_TOOLS_VERSION=1.10.1.507
 
+ENV DEBIAN_FRONTEND=noninteractive
 
 RUN apt-get -qq update && apt-get -qq -y install curl wget bzip2 openjdk-8-jdk-headless python3.8 libpython3.8 python3-pip \
     && curl -o install-clojure https://download.clojure.org/install/linux-install-${CLOJURE_TOOLS_VERSION}.sh \

dockerfiles/Py39Dockerfile

@@ -1,10 +1,12 @@
 # We will use Ubuntu for our image
-FROM ubuntu:latest
+FROM ubuntu:22.04
 
 # Updating Ubuntu packages
 
 ARG CLOJURE_TOOLS_VERSION=1.10.1.507
 
+ENV DEBIAN_FRONTEND=noninteractive
+
 RUN apt-get -qq update \
     && apt install -y software-properties-common \
     && add-apt-repository -y ppa:deadsnakes/ppa