Restore Snapcraft files.

src/installer/snaps/arm/dotnet-sdk-3.1/snap/snapcraft.yaml

@@ -0,0 +1,40 @@
+name: dotnet-sdk
+version: 3.1.201
+summary: Cross-Platform .NET Core SDK
+description: |
+  .NET Core SDK. https://dot.net/core.
+
+grade: stable
+confinement: classic
+
+apps:
+  dotnet:
+    command: dotnet
+
+architectures:
+  - build-on: [amd64]
+    run-on: [armhf]
+
+base: core
+
+parts:
+  dotnet-sdk:
+      plugin: dump
+      source: https://download.visualstudio.microsoft.com/download/pr/ccbcbf70-9911-40b1-a8cf-e018a13e720e/03c0621c6510f9c6f4cca6951f2cc1a4/dotnet-sdk-3.1.201-linux-arm.tar.gz
+      source-checksum: sha512/f37d0e55c9f593c6951bea5a6bb1ea3194486956efe08a2a0f266b419d912cdcbf4ac279358976f0bfa1fe560c333ca5d5437f8e8c718bb5963991e4395e0cd7
+      stage-packages:
+        - libicu55
+        - libssl1.0.0
+        - libcurl3
+        - libgssapi-krb5-2
+        - libstdc++6
+        - zlib1g
+        - libgcc1
+        - libtinfo5
+        - liblttng-ust0
+        - liburcu4
+
+  runtime-wrapper:
+      plugin: dump
+      source: .
+

src/installer/snaps/arm/dotnet-sdk-5.0/snap/snapcraft.yaml

@@ -0,0 +1,40 @@
+name: dotnet-sdk
+version: 5.0.100-preview.2.20176.6
+summary: Cross-Platform .NET Core SDK
+description: |
+  .NET Core SDK. https://dot.net/core.
+
+grade: stable
+confinement: classic
+
+apps:
+  dotnet:
+    command: dotnet
+
+architectures:
+  - build-on: [amd64]
+    run-on: [armhf]
+
+base: core
+
+parts:
+  dotnet-sdk:
+      plugin: dump
+      source: https://download.visualstudio.microsoft.com/download/pr/f87574ee-c128-4e91-b436-68c99d801daf/b296bea9d987a4edaa71df47cd2e7aca/dotnet-sdk-5.0.100-preview.2.20176.6-linux-arm64.tar.gz
+      source-checksum: sha512/53cbf213e2e97b909b256d931f061178f26e5647424f144266d4af2e12d6443ef7398207a8f4e6f220c61db9ce49de3dc09d88417288a6a61d9b05e1def6b279
+      stage-packages:
+        - libicu55
+        - libssl1.0.0
+        - libcurl3
+        - libgssapi-krb5-2
+        - libstdc++6
+        - zlib1g
+        - libgcc1
+        - libtinfo5
+        - liblttng-ust0
+        - liburcu4
+
+  runtime-wrapper:
+      plugin: dump
+      source: .
+

src/installer/snaps/arm64/dotnet-sdk-5.0/snap/snapcraft.yaml

@@ -0,0 +1,40 @@
+name: dotnet-sdk
+version: 5.0.100-preview.2.20176.6
+summary: Cross-Platform .NET Core SDK
+description: |
+  .NET Core SDK. https://dot.net/core.
+
+grade: stable
+confinement: classic
+
+apps:
+  dotnet:
+    command: dotnet
+
+architectures:
+  - build-on: [amd64]
+    run-on: [arm64]
+
+base: core18
+
+parts:
+  dotnet-sdk:
+      plugin: dump
+      source: https://download.visualstudio.microsoft.com/download/pr/f87574ee-c128-4e91-b436-68c99d801daf/b296bea9d987a4edaa71df47cd2e7aca/dotnet-sdk-5.0.100-preview.2.20176.6-linux-arm64.tar.gz
+      source-checksum: sha512/53cbf213e2e97b909b256d931f061178f26e5647424f144266d4af2e12d6443ef7398207a8f4e6f220c61db9ce49de3dc09d88417288a6a61d9b05e1def6b279
+      stage-packages:
+        - libicu60
+        - libssl1.0.0
+        - libcurl3
+        - libgssapi-krb5-2
+        - libstdc++6
+        - zlib1g
+        - libgcc1
+        - libtinfo5
+        - liblttng-ust0
+        - liburcu6
+
+  runtime-wrapper:
+      plugin: dump
+      source: .
+

src/installer/snaps/dotnet-runtime-2.1/snap/snapcraft.yaml

@@ -0,0 +1,45 @@
+name: dotnet-runtime-21
+base: core18
+version: 2.1.15
+summary: Cross-Platform .NET Core Runtime. 
+description: |
+  .NET Core runtimes and libraries which are optimized for running .NET Core apps in production. See https://dot.net/core.
+  .NET Core is a general purpose development platform maintained by Microsoft. 
+
+grade: stable
+confinement: strict
+
+apps:
+  dotnet:
+    command: dotnet
+    plugs:
+      - network
+      - network-bind
+      - removable-media
+      - home
+
+slots:
+  dotnet-runtime:
+    content: dotnet-runtime-21
+    interface: content
+    read: [/]
+
+parts:
+  dotnet-runtime:
+    plugin: dump
+    source: https://download.visualstudio.microsoft.com/download/pr/d2fb0b54-01ce-452c-b2a2-86dbef286265/055ad7740827cbe862d14ceb7ea54fac/dotnet-runtime-2.1.15-linux-x64.tar.gz
+    source-checksum: sha512/cfd7f7caea7e896dd4d68a05c827c86f38595f24e854edb3f934715ee1268e2623f17ff768215e465fe596cd474497384be2b1381f04ddd6d555665a341f65f6
+    stage-packages:
+      - libicu60
+      - libssl1.0.0
+      - libcurl3
+      - libgssapi-krb5-2
+      - liblttng-ust0
+      - libstdc++6
+      - zlib1g
+      - libgcc1
+      - lldb
+      - libunwind8
+      - libtinfo5
+      - libdb5.3
+      - libc6

src/installer/snaps/dotnet-runtime-3.1/snap/snapcraft.yaml

@@ -0,0 +1,43 @@
+name: dotnet-runtime-31
+base: core18
+version: 3.1.1
+summary: Cross-Platform .NET Core Runtime. 
+description: |
+  .NET Core runtimes and libraries which are optimized for running .NET Core apps in production. See https://dot.net/core.
+  .NET Core is a general purpose development platform maintained by Microsoft. 
+
+grade: stable
+confinement: strict
+
+apps:
+  dotnet:
+    command: dotnet
+    plugs:
+      - network
+      - network-bind
+      - removable-media
+      - home
+
+slots:
+  dotnet-runtime:
+    content: dotnet-runtime-31
+    interface: content
+    read: [/]
+
+parts:
+  dotnet-runtime:
+    plugin: dump
+    source: https://download.visualstudio.microsoft.com/download/pr/e060c2eb-1476-4d70-857c-24f5eead2070/ff0e007b7373c04f754b3818ffdb2134/dotnet-runtime-3.1.1-linux-x64.tar.gz
+    source-checksum: sha512/991a89ac7b52d3bf6c00359ce94c5a3f7488cd3d9e4663ba0575e1a5d8214c5fcc459e2cb923c369c2cdb789a96f0b1dfb5c5aae1a04df6e7f1f365122072611
+    stage-packages:
+      - libicu60
+      - libssl1.0.0
+      - libcurl3
+      - libgssapi-krb5-2
+      - liblttng-ust0
+      - libstdc++6
+      - zlib1g
+      - libgcc1
+      - libtinfo5
+      - libdb5.3
+      - libc6

src/installer/snaps/dotnet-runtime-5.0/snap/snapcraft.yaml

@@ -0,0 +1,43 @@
+name: dotnet-runtime-50
+base: core18
+version: 5.0.0-preview.2.20167.3
+summary: Cross-Platform .NET Core Runtime. 
+description: |
+  .NET Core runtimes and libraries which are optimized for running .NET Core apps in production. See https://dot.net/core.
+  .NET Core is a general purpose development platform maintained by Microsoft. 
+
+grade: stable
+confinement: strict
+
+apps:
+  dotnet:
+    command: dotnet
+    plugs:
+      - network
+      - network-bind
+      - removable-media
+      - home
+
+slots:
+  dotnet-runtime:
+    content: dotnet-runtime-50
+    interface: content
+    read: [/]
+
+parts:
+  dotnet-runtime:
+    plugin: dump
+    source: https://download.visualstudio.microsoft.com/download/pr/169871b7-ce8f-4518-a342-209f98342569/4bb2abeecf4b064eac907fb28f96b5ca/aspnetcore-runtime-5.0.0-preview.2.20167.3-linux-x64.tar.gz
+    source-checksum: sha512/c155a94b463020f413b9cc6650219b27c08f331f9d1926966e4c4471b1a3cc79e199fbbd4747e8ad89bd03d66cd90cbc68a5554c54e931ac59f7508810303327
+    stage-packages:
+      - libicu60
+      - libssl1.0.0
+      - libcurl3
+      - libgssapi-krb5-2
+      - liblttng-ust0
+      - libstdc++6
+      - zlib1g
+      - libgcc1
+      - libtinfo5
+      - libdb5.3
+      - libc6

src/installer/snaps/dotnet-sdk-2.1/snap/snapcraft.yaml

@@ -0,0 +1,37 @@
+name: dotnet-sdk
+version: 2.1.804
+summary: Cross-Platform .NET Core SDK
+description: |
+  .NET Core SDK. https://dot.net/core.
+
+grade: stable
+confinement: classic
+
+apps:
+  dotnet:
+    command: dotnet
+
+base: core18
+
+parts:
+  dotnet-sdk:
+      plugin: dump
+      source: https://download.visualstudio.microsoft.com/download/pr/9ba4d9b0-3fca-40ed-b5a2-1552dfa4f89e/8e5e555b543a7afd8fd764e080d25671/dotnet-sdk-2.1.804-linux-x64.tar.gz
+      source-checksum: sha512/82b039856dadd2b47fa56a262d1a1a389132f0db037d4ee5c0872f2949c2cd447c33a978e1f532783119aa416860e03f26b840863ca3a97392a4b77f8df5bf66
+      stage-packages:
+        - libicu60
+        - libssl1.0.0
+        - libcurl3
+        - libgssapi-krb5-2
+        - libstdc++6
+        - zlib1g
+        - libgcc1
+        - libtinfo5
+        - liblttng-ust0
+        - liburcu6
+        - lldb
+
+  runtime-wrapper:
+      plugin: dump
+      source: .
+

src/installer/snaps/dotnet-sdk-3.1/snap/snapcraft.yaml

@@ -0,0 +1,36 @@
+name: dotnet-sdk
+version: 3.1.200
+summary: Cross-Platform .NET Core SDK
+description: |
+  .NET Core SDK. https://dot.net/core.
+
+grade: stable
+confinement: classic
+
+apps:
+  dotnet:
+    command: dotnet
+
+base: core18
+
+parts:
+  dotnet-sdk:
+      plugin: dump
+      source: https://download.visualstudio.microsoft.com/download/pr/daec2daf-b458-4ae1-9046-b8ba09b5fb49/733e2d73b41640d6e6bdf1cc6b9ef03b/dotnet-sdk-3.1.200-linux-x64.tar.gz
+      source-checksum: sha512/5b9398c7bfe7f67cd9f38fdd4e6e429e1b6aaac0fe04672be0f8dca26580fb46906fd1d2deea6a7d3fb07d77e898f067d3ac1805fe077dc7c1adf9515c9bc9a9
+      stage-packages:
+        - libicu60
+        - libssl1.0.0
+        - libcurl3
+        - libgssapi-krb5-2
+        - libstdc++6
+        - zlib1g
+        - libgcc1
+        - libtinfo5
+        - liblttng-ust0
+        - liburcu6
+
+  runtime-wrapper:
+      plugin: dump
+      source: .
+

src/installer/snaps/dotnet-sdk-5.0/snap/snapcraft.yaml

@@ -0,0 +1,36 @@
+name: dotnet-sdk
+version: 5.0.100-preview.2.20176.6
+summary: Cross-Platform .NET Core SDK
+description: |
+  .NET Core SDK. https://dot.net/core.
+
+grade: stable
+confinement: classic
+
+apps:
+  dotnet:
+    command: dotnet
+
+base: core18
+
+parts:
+  dotnet-sdk:
+      plugin: dump
+      source: https://download.visualstudio.microsoft.com/download/pr/727a5825-d29a-4f45-beaa-053399f8b5ee/5f15827ceb4851ef87a008f5de0acf6c/dotnet-sdk-5.0.100-preview.2.20176.6-linux-x64.tar.gz
+      source-checksum: sha512/fface8ff5facdec10d11f8249b426a71cd5bc17aa4e4b1fbe85f4a462e55bdb648a456973a3257f0a700be1aeb0f9bb41639ceca12c2e67d1571e4544ae62bd7
+      stage-packages:
+        - libicu60
+        - libssl1.0.0
+        - libcurl3
+        - libgssapi-krb5-2
+        - libstdc++6
+        - zlib1g
+        - libgcc1
+        - libtinfo5
+        - liblttng-ust0
+        - liburcu6
+
+  runtime-wrapper:
+      plugin: dump
+      source: .
+

src/installer/snaps/dotnet-sdk/dotnet-runtime

@@ -0,0 +1,17 @@
+#!/bin/sh
+
+dotnet_runtime_snaps=$(ls "$SNAP/../.." | grep dotnet-runtime)
+
+for snap in "$dotnet_runtime_snaps"
+do
+  runtime_dir=$(realpath "$SNAP/../../$snap/current/shared/Microsoft.NETCore.App")
+  if [ -d "$runtime_dir" ]; then
+    runtime_version=$(ls "$runtime_dir")
+    runtime_path="$SNAP_DATA/Microsoft.NETCore.App/$runtime_version"
+    if [ ! -d "$runtime_path" ]; then
+      sudo ln -s "$runtime_dir/$runtime_version" "$runtime_path"
+    fi
+  fi
+done
+
+exec $SNAP/dotnet "$@"