code-server-dotnet: initial release

Dockerfile

@@ -1,6 +1,42 @@
+FROM lsiobase/alpine:3.12 as buildstage
+
+ARG DOTNET_VERSIONS
+
+RUN \
+ apk add --no-cache \
+    curl \
+    jq && \
+ DOTNET_JSON=$(curl -sX GET "https://raw.githubusercontent.com/dotnet/core/master/release-notes/releases-index.json") && \
+ if [ -z ${DOTNET_VERSIONS+x} ]; then \
+    DOTNET_VERSIONS=$(echo "$DOTNET_JSON" | jq -r '."releases-index"[] | select(."support-phase"=="lts") | ."latest-sdk"' | tr '\n' ' ' | head -c -1); \
+ fi && \
+ mkdir -p /root-layer/dotnet && \
+ echo "$DOTNET_VERSIONS" > /root-layer/dotnet/versions.txt && \
+ echo "versions are ${DOTNET_VERSIONS}" && \
+ for i in $DOTNET_VERSIONS; do \
+    echo "processing version ${i}" && \
+    DOTNET_RELEASE_URL=$(echo "${DOTNET_JSON}" | jq -r ".\"releases-index\"[] | select(.\"latest-sdk\"==\"${i}\") | .\"releases.json\"") && \
+    DOTNET_RELEASE_JSON=$(curl -sX GET "${DOTNET_RELEASE_URL}") && \
+    AMD64_URL=$(echo "${DOTNET_RELEASE_JSON}" | jq -r ".releases[] | select(.sdk.version==\"${i}\") | .sdk.files[] | select(.name | contains(\"linux-x64\")) | .url") && \
+    ARM32_URL=$(echo "${DOTNET_RELEASE_JSON}" | jq -r ".releases[] | select(.sdk.version==\"${i}\") | .sdk.files[] | select(.name | contains(\"linux-arm.\")) | .url") && \
+    ARM64_URL=$(echo "${DOTNET_RELEASE_JSON}" | jq -r ".releases[] | select(.sdk.version==\"${i}\") | .sdk.files[] | select(.name | contains(\"linux-arm64\")) | .url") && \
+    curl -fS --retry 3 --retry-connrefused -o \
+        /root-layer/dotnet/dotnetsdk_"${i}"_x86_64.tar.gz -L \
+        "${AMD64_URL}" && \
+    curl -fS --retry 3 --retry-connrefused -o \
+        /root-layer/dotnet/dotnetsdk_"${i}"_armv7l.tar.gz -L \
+        "${ARM32_URL}" && \
+    curl -fS --retry 3 --retry-connrefused -o \
+        /root-layer/dotnet/dotnetsdk_"${i}"_aarch64.tar.gz -L \
+        "${ARM64_URL}"; \
+done
+
+COPY root/ /root-layer/
+
+# runtime stage
 FROM scratch
 
-LABEL maintainer="username"
+LABEL maintainer="aptalca"
 
-# copy local files
-COPY root/ /
+# Add files from buildstage
+COPY --from=buildstage /root-layer/ /