Add C, C++, C#

docker/c/Dockerfile

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+FROM alpine
+LABEL author="1Computer1"
+
+RUN apk update
+RUN apk add gcc libc-dev
+
+COPY run.sh /var/run/
+WORKDIR /var/ws

docker/c/run.sh

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+echo "$1" > program.c
+gcc program.c -o program && ./program

docker/cpp/Dockerfile

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+FROM alpine
+LABEL author="1Computer1"
+
+RUN apk update
+RUN apk add g++
+
+COPY run.sh /var/run/
+WORKDIR /var/ws

docker/cpp/run.sh

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+echo "$1" > program.cpp
+g++ program.cpp -o program && ./program

docker/csharp/Dockerfile

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+FROM mono
+LABEL author="1Computer1"
+
+COPY run.sh /var/run/
+WORKDIR /var/ws

docker/csharp/run.sh

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+if [ "$EVAL_EXPR" = "true" ]; then
+    csharp -e "$1"
+else
+    echo "$1" > program.cs
+    csc program.cs >/dev/null && mono program.exe
+fi