Normalize names, deal with debconf warnings, disable git warning for java 12

Author: Chuxel

containers/azure-functions-java-8/.devcontainer/Dockerfile

@@ -10,6 +10,15 @@ ENV DEBIAN_FRONTEND=noninteractive
 RUN apt-get update \
     && apt-get -y install --no-install-recommends apt-utils 2>&1
 
+# Verify git and needed tools are installed
+RUN apt-get -y install \
+        git \
+        procps \
+        curl \
+        apt-transport-https \
+        gnupg2 \
+        lsb-release
+
 # Install dotnet core sdk - See https://github.com/dotnet/dotnet-docker/blob/master/2.1/sdk/stretch/amd64/Dockerfile
 # Install .NET CLI dependencies
 RUN apt-get install -y --no-install-recommends \
@@ -45,14 +54,6 @@ ENV ASPNETCORE_URLS=http://+:80 \
 # Trigger first run experience by running arbitrary cmd to populate local package cache
 RUN dotnet help &> /dev/null
 
-# Verify git and needed tools are installed
-RUN apt-get -y install \
-        git \
-        procps \
-        curl \
-        apt-transport-https \
-        gnupg2 \
-        lsb-release
 
 # Install Azure Functions and Azure CLI
 RUN echo "deb [arch=amd64] https://packages.microsoft.com/repos/azure-cli/ $(lsb_release -cs) main" > /etc/apt/sources.list.d/azure-cli.list \

containers/java-11/.devcontainer/Dockerfile

@@ -5,8 +5,13 @@
 
 FROM maven:3-jdk-11
 
-# Install git, process tools
-RUN apt-get update && apt-get -y install git procps curl
+# Configure apt
+ENV DEBIAN_FRONTEND=noninteractive
+RUN apt-get update \
+    && apt-get -y install --no-install-recommends apt-utils 2>&1
+
+# Verify git, needed tools installed
+RUN apt-get -y install git procps curl
 
 # Install Gradle
 ENV GRADLE_HOME /opt/gradle
@@ -23,3 +28,4 @@ RUN curl -SL --output gradle.zip "https://services.gradle.org/distributions/grad
 RUN apt-get autoremove -y \
     && apt-get clean -y \
     && rm -rf /var/lib/apt/lists/*
+ENV DEBIAN_FRONTEND=dialog

containers/java-11/README.md

@@ -2,7 +2,7 @@
 
 ## Summary
 
-*Develop Java applications. Includes the JDK 11, Maven and Gradle build tools.*
+*Develop Java 11 applications. Includes the JDK 11, Maven, and Gradle build tools.*
 
 | Metadata | Value |  
 |----------|-------|

containers/java-12/.devcontainer/Dockerfile

@@ -5,8 +5,12 @@
 
 FROM maven:3-jdk-12
 
-# Install git, process tools
-RUN yum update -y && yum install -y git procps unzip
+# Add a setting to disable the out of date git warning. Unfortunatley, openJDK 
+# Docker images use Oracle SE Linux which has an outdated version of git (<2.0).
+COPY settings.vscode.json /root/.vscode-remote/data/Machine/settings.json
+
+# Verify git, needed tools installed
+RUN yum install -y git curl procps unzip
 
 # Install Gradle
 ENV GRADLE_HOME /opt/gradle

containers/java-12/.devcontainer/settings.vscode.json

@@ -0,0 +1,3 @@
+{
+    "git.ignoreLegacyWarning": true
+}

containers/java-12/README.md

@@ -2,7 +2,7 @@
 
 ## Summary
 
-*Develop Java applications. Includes the JDK 12, Maven and Gradle build tools.*
+*Develop Java 12 applications. Includes JDK 12, Maven, and Gradle build tools.*
 
 | Metadata | Value |  
 |----------|-------|

containers/java-8-maven/.devcontainer/Dockerfile

@@ -0,0 +1,31 @@
+#-----------------------------------------------------------------------------------------
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License. See LICENSE in the project root for license information.
+#-----------------------------------------------------------------------------------------
+
+FROM maven:3-jdk-8
+
+# Configure apt
+ENV DEBIAN_FRONTEND=noninteractive
+RUN apt-get update \
+    && apt-get -y install --no-install-recommends apt-utils 2>&1
+
+# Verify git, needed tools installed
+RUN apt-get -y install git procps curl
+
+# Install Gradle
+ENV GRADLE_HOME /opt/gradle
+ENV GRADLE_VERSION 5.4
+ARG GRADLE_DOWNLOAD_SHA256=c8c17574245ecee9ed7fe4f6b593b696d1692d1adbfef425bef9b333e3a0e8de
+RUN curl -SL --output gradle.zip "https://services.gradle.org/distributions/gradle-${GRADLE_VERSION}-bin.zip" \
+    && echo "${GRADLE_DOWNLOAD_SHA256} *gradle.zip" | sha256sum --check - \
+    && unzip gradle.zip \
+    && rm gradle.zip \
+    && mv "gradle-${GRADLE_VERSION}" "${GRADLE_HOME}/" \
+    && ln -s "${GRADLE_HOME}/bin/gradlec" /usr/bin/gradle
+
+# Clean up
+RUN apt-get autoremove -y \
+    && apt-get clean -y \
+    && rm -rf /var/lib/apt/lists/*
+ENV DEBIAN_FRONTEND=dialog

containers/java-8-maven/.devcontainer/devcontainer.json

@@ -0,0 +1,7 @@
+{
+	"name": "Java 8",
+	"dockerFile": "Dockerfile",
+	"extensions": [
+		"vscjava.vscode-java-pack"
+	]
+}